57421039 has 16 divisors (see below), whose sum is σ = 63817600. Its totient is φ = 51329376.

The previous prime is 57421031. The next prime is 57421051. The reversal of 57421039 is 93012475.

It is a cyclic number.

It is not a de Polignac number, because 57421039 - 2³ = 57421031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57421039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57421031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77332 + ... + 78070.

It is an arithmetic number, because the mean of its divisors is an integer number (3988600).

Almost surely, 2^57421039 is an apocalyptic number.

57421039 is a deficient number, since it is larger than the sum of its proper divisors (6396561).

57421039 is a wasteful number, since it uses less digits than its factorization.

57421039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 57421039 is about 7577.6671212188. The cubic root of 57421039 is about 385.7953737481.

The spelling of 57421039 in words is "fifty-seven million, four hundred twenty-one thousand, thirty-nine".