57264421 has 4 divisors (see below), whose sum is σ = 58203244. Its totient is φ = 56325600.

The previous prime is 57264407. The next prime is 57264437. The reversal of 57264421 is 12446275.

57264421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26061025 + 31203396 = 5105^2 + 5586^2 .

It is a cyclic number.

It is not a de Polignac number, because 57264421 - 2⁷ = 57264293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57264401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469320 + ... + 469441.

It is an arithmetic number, because the mean of its divisors is an integer number (14550811).

Almost surely, 2^57264421 is an apocalyptic number.

It is an amenable number.

57264421 is a deficient number, since it is larger than the sum of its proper divisors (938823).

57264421 is an equidigital number, since it uses as much as digits as its factorization.

57264421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938822.

The product of its digits is 13440, while the sum is 31.

The square root of 57264421 is about 7567.3258817101. The cubic root of 57264421 is about 385.4442973299. Note that the first 3 decimals are identical.

The spelling of 57264421 in words is "fifty-seven million, two hundred sixty-four thousand, four hundred twenty-one".