52557816 has 32 divisors (see below), whose sum is σ = 131610960. Its totient is φ = 17490432.

The previous prime is 52557767. The next prime is 52557823. The reversal of 52557816 is 61875525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17136 + ... + 19968.

Almost surely, 2^52557816 is an apocalyptic number.

It is an amenable number.

52557816 is an abundant number, since it is smaller than the sum of its proper divisors (79053144).

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

52557816 is a wasteful number, since it uses less digits than its factorization.

52557816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3615 (or 3611 counting only the distinct ones).

The product of its digits is 84000, while the sum is 39.

The square root of 52557816 is about 7249.6769583203. The cubic root of 52557816 is about 374.5810218382.

The spelling of 52557816 in words is "fifty-two million, five hundred fifty-seven thousand, eight hundred sixteen".