57272843 has 4 divisors (see below), whose sum is σ = 57293928. Its totient is φ = 57251760.

The previous prime is 57272833. The next prime is 57272849. The reversal of 57272843 is 34827275.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57272843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57272797 and 57272806.

It is not an unprimeable number, because it can be changed into a prime (57272849) 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, 5738 + ... + 12143.

It is an arithmetic number, because the mean of its divisors is an integer number (14323482).

Almost surely, 2^57272843 is an apocalyptic number.

57272843 is a deficient number, since it is larger than the sum of its proper divisors (21085).

57272843 is a wasteful number, since it uses less digits than its factorization.

57272843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21084.

The product of its digits is 94080, while the sum is 38.

The square root of 57272843 is about 7567.8823325948. The cubic root of 57272843 is about 385.4631924407.

The spelling of 57272843 in words is "fifty-seven million, two hundred seventy-two thousand, eight hundred forty-three".