57503312 has 20 divisors (see below), whose sum is σ = 116257440. Its totient is φ = 27501408.

The previous prime is 57503311. The next prime is 57503351. The reversal of 57503312 is 21330575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57503311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77762 + ... + 78497.

It is an arithmetic number, because the mean of its divisors is an integer number (5812872).

Almost surely, 2^57503312 is an apocalyptic number.

It is an amenable number.

57503312 is an abundant number, since it is smaller than the sum of its proper divisors (58754128).

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

57503312 is a wasteful number, since it uses less digits than its factorization.

57503312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156290 (or 156284 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 57503312 is about 7583.0938277197. The cubic root of 57503312 is about 385.9795419907.

Adding to 57503312 its reverse (21330575), we get a palindrome (78833887).

The spelling of 57503312 in words is "fifty-seven million, five hundred three thousand, three hundred twelve".