57426643 has 4 divisors (see below), whose sum is σ = 57629848. Its totient is φ = 57223440.

The previous prime is 57426631. The next prime is 57426661. The reversal of 57426643 is 34662475.

57426643 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57426643 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (57426673) 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, 101178 + ... + 101743.

It is an arithmetic number, because the mean of its divisors is an integer number (14407462).

Almost surely, 2^57426643 is an apocalyptic number.

57426643 is a deficient number, since it is larger than the sum of its proper divisors (203205).

57426643 is a wasteful number, since it uses less digits than its factorization.

57426643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203204.

The product of its digits is 120960, while the sum is 37.

The square root of 57426643 is about 7578.0368829929. The cubic root of 57426643 is about 385.8079238922.

The spelling of 57426643 in words is "fifty-seven million, four hundred twenty-six thousand, six hundred forty-three".