57272891 has 8 divisors (see below), whose sum is σ = 61741680. Its totient is φ = 52813152.

The previous prime is 57272879. The next prime is 57272899. The reversal of 57272891 is 19827275.

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 57272891 - 2²² = 53078587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57272899) 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, 17036 + ... + 20118.

It is an arithmetic number, because the mean of its divisors is an integer number (7717710).

Almost surely, 2^57272891 is an apocalyptic number.

57272891 is a deficient number, since it is larger than the sum of its proper divisors (4468789).

57272891 is a wasteful number, since it uses less digits than its factorization.

57272891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4525.

The product of its digits is 70560, while the sum is 41.

The square root of 57272891 is about 7567.8855038908. The cubic root of 57272891 is about 385.4633001254.

The spelling of 57272891 in words is "fifty-seven million, two hundred seventy-two thousand, eight hundred ninety-one".