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61 in words

61

sixty-one

61 is written sixty-one.

Ways to write it

As an ordinal: sixty-first
Roman numeral: LXI
Expanded form: 60 + 1

Place value

Place	Digit	Value
tens	6	60
ones	1	1

Number facts

Even or odd: Odd
Prime or composite: Prime
Factors: 1 and 61 (2 factors)
First 10 multiples: 61, 122, 183, 244, 305, 366, 427, 488, 549, 610
Square: 61 × 61 = 3,721
Square root: ≈ 7.81
Sum of the digits: 6 + 1 = 7
Rounded to the nearest 10: 60
Number before: 60
Number after: 62
In binary: 111101

Quick check

What number comes just after 61?
Show the answer
62
Is 61 even or odd?
Show the answer
Odd
What is 61 + 10?
Show the answer
71

Practice with a game

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Frequently asked questions

How do you write 61 in words?

61 is written "sixty-one".

Is 61 a prime number?

Yes. 61 is a prime number: its only factors are 1 and 61.

What are the factors of 61?

The factors of 61 are 1 and 61.

How do you write 61 in Roman numerals?

61 in Roman numerals is LXI.