57937981 has 8 divisors (see below), whose sum is σ = 59281920. Its totient is φ = 56598768.

The previous prime is 57937949. The next prime is 57937987. The reversal of 57937981 is 18973975.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57937981 - 2⁵ = 57937949 is a prime.

It is a super-2 number, since 2×57937981² = 6713619284712722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57937987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38220 + ... + 39706.

It is an arithmetic number, because the mean of its divisors is an integer number (7410240).

Almost surely, 2^57937981 is an apocalyptic number.

It is an amenable number.

57937981 is a deficient number, since it is larger than the sum of its proper divisors (1343939).

57937981 is a wasteful number, since it uses less digits than its factorization.

57937981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363.

The product of its digits is 476280, while the sum is 49.

The square root of 57937981 is about 7611.7002699791. The cubic root of 57937981 is about 386.9496448002.

The spelling of 57937981 in words is "fifty-seven million, nine hundred thirty-seven thousand, nine hundred eighty-one".