61751 has 2 divisors, whose sum is σ = 61752. Its totient is φ = 61750.

The previous prime is 61729. The next prime is 61757. The reversal of 61751 is 15716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61751 - 2⁶ = 61687 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30875 + 30876.

It is an arithmetic number, because the mean of its divisors is an integer number (30876).

2⁶¹⁷⁵¹ is an apocalyptic number.

61751 is a deficient number, since it is larger than the sum of its proper divisors (1).

61751 is an equidigital number, since it uses as much as digits as its factorization.

61751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 210, while the sum is 20.

The square root of 61751 is about 248.4974848967. The cubic root of 61751 is about 39.5258603290.

The spelling of 61751 in words is "sixty-one thousand, seven hundred fifty-one".