57390015 has 8 divisors (see below), whose sum is σ = 91824048. Its totient is φ = 30608000.

The previous prime is 57390007. The next prime is 57390017. The reversal of 57390015 is 51009375.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57390015 - 2³ = 57390007 is a prime.

It is a super-2 number, since 2×57390015² = 6587227643400450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57390017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1912986 + ... + 1913015.

It is an arithmetic number, because the mean of its divisors is an integer number (11478006).

Almost surely, 2^57390015 is an apocalyptic number.

57390015 is a deficient number, since it is larger than the sum of its proper divisors (34434033).

57390015 is a wasteful number, since it uses less digits than its factorization.

57390015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3826009.

The product of its (nonzero) digits is 4725, while the sum is 30.

The square root of 57390015 is about 7575.6197766255. The cubic root of 57390015 is about 385.7258807998.

The spelling of 57390015 in words is "fifty-seven million, three hundred ninety thousand, fifteen".