57390405 has 16 divisors (see below), whose sum is σ = 95817600. Its totient is φ = 29277248.

The previous prime is 57390383. The next prime is 57390407. The reversal of 57390405 is 50409375.

It is a cyclic number.

It is not a de Polignac number, because 57390405 - 2⁵ = 57390373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57390407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82830 + ... + 83519.

It is an arithmetic number, because the mean of its divisors is an integer number (5988600).

Almost surely, 2^57390405 is an apocalyptic number.

It is an amenable number.

57390405 is a deficient number, since it is larger than the sum of its proper divisors (38427195).

57390405 is a wasteful number, since it uses less digits than its factorization.

57390405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166380.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 57390405 is about 7575.6455170500. The cubic root of 57390405 is about 385.7267545450.

The spelling of 57390405 in words is "fifty-seven million, three hundred ninety thousand, four hundred five".