52800816 has 40 divisors (see below), whose sum is σ = 136719424. Its totient is φ = 17559360.

The previous prime is 52800809. The next prime is 52800817. The reversal of 52800816 is 61800825.

52800816 = 1269² + 1270² + ... + 1300².

It is not an unprimeable number, because it can be changed into a prime (52800817) 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, 25251 + ... + 27261.

Almost surely, 2^52800816 is an apocalyptic number.

It is an amenable number.

52800816 is an abundant number, since it is smaller than the sum of its proper divisors (83918608).

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

52800816 is a wasteful number, since it uses less digits than its factorization.

52800816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2569 (or 2563 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 52800816 is about 7266.4169987691. The cubic root of 52800816 is about 375.1574236826.

Subtracting 52800816 from its reverse (61800825), we obtain a palindrome (9000009).

The spelling of 52800816 in words is "fifty-two million, eight hundred thousand, eight hundred sixteen".