59981 has 2 divisors, whose sum is σ = 59982. Its totient is φ = 59980.

The previous prime is 59971. The next prime is 59999. The reversal of 59981 is 18995.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42025 + 17956 = 205^2 + 134^2 .

It is a cyclic number.

It is not a de Polignac number, because 59981 - 2¹⁴ = 43597 is a prime.

It is a super-2 number, since 2×59981² = 7195440722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 59981.

It is not a weakly prime, because it can be changed into another prime (59921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29990 + 29991.

It is an arithmetic number, because the mean of its divisors is an integer number (29991).

2⁵⁹⁹⁸¹ is an apocalyptic number.

It is an amenable number.

59981 is a deficient number, since it is larger than the sum of its proper divisors (1).

59981 is an equidigital number, since it uses as much as digits as its factorization.

59981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 32.

The square root of 59981 is about 244.9101876199. The cubic root of 59981 is about 39.1445436151.

The spelling of 59981 in words is "fifty-nine thousand, nine hundred eighty-one".