57072504 has 64 divisors (see below), whose sum is σ = 151084800. Its totient is φ = 17915904.

The previous prime is 57072487. The next prime is 57072511. The reversal of 57072504 is 40527075.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116949 + ... + 117435.

It is an arithmetic number, because the mean of its divisors is an integer number (2360700).

Almost surely, 2^57072504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57072504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75542400).

57072504 is an abundant number, since it is smaller than the sum of its proper divisors (94012296).

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

57072504 is a wasteful number, since it uses less digits than its factorization.

57072504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772 (or 768 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 57072504 is about 7554.6346040030. The cubic root of 57072504 is about 385.0132204377.

Adding to 57072504 its reverse (40527075), we get a palindrome (97599579).

The spelling of 57072504 in words is "fifty-seven million, seventy-two thousand, five hundred four".