57422639 has 6 divisors (see below), whose sum is σ = 59471880. Its totient is φ = 55441736.

The previous prime is 57422627. The next prime is 57422653. The reversal of 57422639 is 93622475.

It is a de Polignac number, because none of the positive numbers 2^k-57422639 is a prime.

It is a super-3 number, since 3×57422639³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57422609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33299 + ... + 34980.

It is an arithmetic number, because the mean of its divisors is an integer number (9911980).

Almost surely, 2^57422639 is an apocalyptic number.

57422639 is a deficient number, since it is larger than the sum of its proper divisors (2049241).

57422639 is an equidigital number, since it uses as much as digits as its factorization.

57422639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68337 (or 68308 counting only the distinct ones).

The product of its digits is 90720, while the sum is 38.

The square root of 57422639 is about 7577.7726938725. The cubic root of 57422639 is about 385.7989570274.

The spelling of 57422639 in words is "fifty-seven million, four hundred twenty-two thousand, six hundred thirty-nine".