57972691 has 4 divisors (see below), whose sum is σ = 66254512. Its totient is φ = 49690872.

The previous prime is 57972689. The next prime is 57972709. The reversal of 57972691 is 19627975.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 57972691 - 2¹ = 57972689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57972611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4140900 + ... + 4140913.

It is an arithmetic number, because the mean of its divisors is an integer number (16563628).

Almost surely, 2^57972691 is an apocalyptic number.

57972691 is a deficient number, since it is larger than the sum of its proper divisors (8281821).

57972691 is an equidigital number, since it uses as much as digits as its factorization.

57972691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8281820.

The product of its digits is 238140, while the sum is 46.

The square root of 57972691 is about 7613.9799710795. The cubic root of 57972691 is about 387.0269017838.

The spelling of 57972691 in words is "fifty-seven million, nine hundred seventy-two thousand, six hundred ninety-one".