57273881 has 4 divisors (see below), whose sum is σ = 65455872. Its totient is φ = 49091892.

The previous prime is 57273877. The next prime is 57273883. The reversal of 57273881 is 18837275.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57273881 - 2² = 57273877 is a prime.

It is a super-2 number, since 2×57273881² = 6560594889604322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57273883) 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, 4090985 + ... + 4090998.

It is an arithmetic number, because the mean of its divisors is an integer number (16363968).

Almost surely, 2^57273881 is an apocalyptic number.

It is an amenable number.

57273881 is a deficient number, since it is larger than the sum of its proper divisors (8181991).

57273881 is an equidigital number, since it uses as much as digits as its factorization.

57273881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8181990.

The product of its digits is 94080, while the sum is 41.

The square root of 57273881 is about 7567.9509115744. The cubic root of 57273881 is about 385.4655211091.

The spelling of 57273881 in words is "fifty-seven million, two hundred seventy-three thousand, eight hundred eighty-one".