57232091891 has 8 divisors (see below), whose sum is σ = 61654897584. Its totient is φ = 52812191520.

The previous prime is 57232091887. The next prime is 57232091893. The reversal of 57232091891 is 19819023275.

It is a happy number.

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 57232091891 - 2² = 57232091887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57232091893) 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, 685325 + ... + 764286.

It is an arithmetic number, because the mean of its divisors is an integer number (7706862198).

Almost surely, 2^57232091891 is an apocalyptic number.

57232091891 is a deficient number, since it is larger than the sum of its proper divisors (4422805693).

57232091891 is a wasteful number, since it uses less digits than its factorization.

57232091891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452661.

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 57232091891 in words is "fifty-seven billion, two hundred thirty-two million, ninety-one thousand, eight hundred ninety-one".