57378531 has 8 divisors (see below), whose sum is σ = 87433984. Its totient is φ = 32787720.

The previous prime is 57378523. The next prime is 57378547. The reversal of 57378531 is 13587375.

57378531 is an esthetic number in base 14, because in such base its adjacent digits differ by 1.

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

It is not a de Polignac number, because 57378531 - 2³ = 57378523 is a prime.

It is a super-2 number, since 2×57378531² = 6584591639435922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57378531.

It is not an unprimeable number, because it can be changed into a prime (57378521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1366135 + ... + 1366176.

It is an arithmetic number, because the mean of its divisors is an integer number (10929248).

Almost surely, 2^57378531 is an apocalyptic number.

57378531 is a deficient number, since it is larger than the sum of its proper divisors (30055453).

57378531 is a wasteful number, since it uses less digits than its factorization.

57378531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732321.

The product of its digits is 88200, while the sum is 39.

The square root of 57378531 is about 7574.8617809172. The cubic root of 57378531 is about 385.7001505892.

The spelling of 57378531 in words is "fifty-seven million, three hundred seventy-eight thousand, five hundred thirty-one".