57232891 has 8 divisors (see below), whose sum is σ = 58340160. Its totient is φ = 56130312.

The previous prime is 57232867. The next prime is 57232919. The reversal of 57232891 is 19823275.

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 57232891 - 2¹⁷ = 57101819 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 57232891.

It is not an unprimeable number, because it can be changed into a prime (57232801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32356 + ... + 34078.

It is an arithmetic number, because the mean of its divisors is an integer number (7292520).

Almost surely, 2^57232891 is an apocalyptic number.

57232891 is a deficient number, since it is larger than the sum of its proper divisors (1107269).

57232891 is a wasteful number, since it uses less digits than its factorization.

57232891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345.

The product of its digits is 30240, while the sum is 37.

The square root of 57232891 is about 7565.2422961859. The cubic root of 57232891 is about 385.3735419948.

The spelling of 57232891 in words is "fifty-seven million, two hundred thirty-two thousand, eight hundred ninety-one".