57981377 has 8 divisors (see below), whose sum is σ = 59942400. Its totient is φ = 56026080.

The previous prime is 57981361. The next prime is 57981397. The reversal of 57981377 is 77318975.

57981377 is nontrivially palindromic in base 13.

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 57981377 - 2⁴ = 57981361 is a prime.

It is a super-2 number, since 2×57981377² = 6723680157632258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57981307) 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, 31628 + ... + 33410.

It is an arithmetic number, because the mean of its divisors is an integer number (7492800).

Almost surely, 2^57981377 is an apocalyptic number.

It is an amenable number.

57981377 is a deficient number, since it is larger than the sum of its proper divisors (1961023).

57981377 is a wasteful number, since it uses less digits than its factorization.

57981377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863.

The product of its digits is 370440, while the sum is 47.

The square root of 57981377 is about 7614.5503478538. The cubic root of 57981377 is about 387.0462301246.

The spelling of 57981377 in words is "fifty-seven million, nine hundred eighty-one thousand, three hundred seventy-seven".