57942581 has 2 divisors, whose sum is σ = 57942582. Its totient is φ = 57942580.

The previous prime is 57942559. The next prime is 57942601. The reversal of 57942581 is 18524975.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51984100 + 5958481 = 7210^2 + 2441^2 .

It is a cyclic number.

It is not a de Polignac number, because 57942581 - 2⁶ = 57942517 is a prime.

It is a super-2 number, since 2×57942581² = 6714685385883122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57942541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28971290 + 28971291.

It is an arithmetic number, because the mean of its divisors is an integer number (28971291).

Almost surely, 2^57942581 is an apocalyptic number.

It is an amenable number.

57942581 is a deficient number, since it is larger than the sum of its proper divisors (1).

57942581 is an equidigital number, since it uses as much as digits as its factorization.

57942581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 41.

The square root of 57942581 is about 7612.0024303727. The cubic root of 57942581 is about 386.9598851827.

The spelling of 57942581 in words is "fifty-seven million, nine hundred forty-two thousand, five hundred eighty-one".