57877421 has 4 divisors (see below), whose sum is σ = 66145632. Its totient is φ = 49609212.

The previous prime is 57877409. The next prime is 57877423. The reversal of 57877421 is 12477875.

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 a de Polignac number, because none of the positive numbers 2^k-57877421 is a prime.

It is a super-2 number, since 2×57877421² = 6699591723222482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57877423) 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, 4134095 + ... + 4134108.

It is an arithmetic number, because the mean of its divisors is an integer number (16536408).

Almost surely, 2^57877421 is an apocalyptic number.

It is an amenable number.

57877421 is a deficient number, since it is larger than the sum of its proper divisors (8268211).

57877421 is an equidigital number, since it uses as much as digits as its factorization.

57877421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8268210.

The product of its digits is 109760, while the sum is 41.

The square root of 57877421 is about 7607.7211436803. The cubic root of 57877421 is about 386.8147773692.

The spelling of 57877421 in words is "fifty-seven million, eight hundred seventy-seven thousand, four hundred twenty-one".