57722139 has 20 divisors (see below), whose sum is σ = 86684400. Its totient is φ = 38277360.

The previous prime is 57722129. The next prime is 57722143. The reversal of 57722139 is 93122775.

57722139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 57722139 - 2¹³ = 57713947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57722129) 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 19 ways as a sum of consecutive naturals, for example, 14329 + ... + 17909.

It is an arithmetic number, because the mean of its divisors is an integer number (4334220).

Almost surely, 2^57722139 is an apocalyptic number.

57722139 is a deficient number, since it is larger than the sum of its proper divisors (28962261).

57722139 is a wasteful number, since it uses less digits than its factorization.

57722139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3792 (or 3783 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 57722139 is about 7597.5087364214. The cubic root of 57722139 is about 386.4685331355.

The spelling of 57722139 in words is "fifty-seven million, seven hundred twenty-two thousand, one hundred thirty-nine".