57975991 has 4 divisors (see below), whose sum is σ = 58009984. Its totient is φ = 57942000.

The previous prime is 57975989. The next prime is 57976013. The reversal of 57975991 is 19957975.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 57975991 - 2¹ = 57975989 is a prime.

It is a super-2 number, since 2×57975991² = 6722431064864162, 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 (57975941) 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, 14295 + ... + 17896.

It is an arithmetic number, because the mean of its divisors is an integer number (14502496).

Almost surely, 2^57975991 is an apocalyptic number.

57975991 is a deficient number, since it is larger than the sum of its proper divisors (33993).

57975991 is a wasteful number, since it uses less digits than its factorization.

57975991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33992.

The product of its digits is 893025, while the sum is 52.

The square root of 57975991 is about 7614.1966746335. The cubic root of 57975991 is about 387.0342452675.

The spelling of 57975991 in words is "fifty-seven million, nine hundred seventy-five thousand, nine hundred ninety-one".