57342881 has 4 divisors (see below), whose sum is σ = 57899712. Its totient is φ = 56786052.

The previous prime is 57342877. The next prime is 57342899. The reversal of 57342881 is 18824375.

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 57342881 - 2² = 57342877 is a prime.

It is a super-2 number, since 2×57342881² = 6576412002760322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57342871) 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, 278261 + ... + 278466.

It is an arithmetic number, because the mean of its divisors is an integer number (14474928).

Almost surely, 2^57342881 is an apocalyptic number.

It is an amenable number.

57342881 is a deficient number, since it is larger than the sum of its proper divisors (556831).

57342881 is a wasteful number, since it uses less digits than its factorization.

57342881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556830.

The product of its digits is 53760, while the sum is 38.

The square root of 57342881 is about 7572.5082370374. The cubic root of 57342881 is about 385.6202539284.

The spelling of 57342881 in words is "fifty-seven million, three hundred forty-two thousand, eight hundred eighty-one".