57378520 has 32 divisors (see below), whose sum is σ = 133269120. Its totient is φ = 22210560.

The previous prime is 57378479. The next prime is 57378521. The reversal of 57378520 is 2587375.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 57378520.

It is a congruent number.

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, 21897 + ... + 24376.

It is an arithmetic number, because the mean of its divisors is an integer number (4164660).

Almost surely, 2^57378520 is an apocalyptic number.

It is an amenable number.

57378520 is an abundant number, since it is smaller than the sum of its proper divisors (75890600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57378520 is a wasteful number, since it uses less digits than its factorization.

57378520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46315 (or 46311 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 57378520 is about 7574.8610548313. The cubic root of 57378520 is about 385.7001259418.

The spelling of 57378520 in words is "fifty-seven million, three hundred seventy-eight thousand, five hundred twenty".