57542390 has 16 divisors (see below), whose sum is σ = 103947408. Its totient is φ = 22934496.

The previous prime is 57542377. The next prime is 57542411. The reversal of 57542390 is 9324575.

It is a super-2 number, since 2×57542390² = 6622253293824200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57542390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7337 + ... + 12996.

It is an arithmetic number, because the mean of its divisors is an integer number (6496713).

Almost surely, 2^57542390 is an apocalyptic number.

57542390 is a deficient number, since it is larger than the sum of its proper divisors (46405018).

57542390 is a wasteful number, since it uses less digits than its factorization.

57542390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20623.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 57542390 is about 7585.6700429164. The cubic root of 57542390 is about 386.0669566256.

The spelling of 57542390 in words is "fifty-seven million, five hundred forty-two thousand, three hundred ninety".