52566516 has 48 divisors (see below), whose sum is σ = 144305280. Its totient is φ = 16490880.

The previous prime is 52566509. The next prime is 52566541. The reversal of 52566516 is 61566525.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 12480 + ... + 16151.

It is an arithmetic number, because the mean of its divisors is an integer number (3006360).

Almost surely, 2^52566516 is an apocalyptic number.

It is an amenable number.

52566516 is an abundant number, since it is smaller than the sum of its proper divisors (91738764).

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

52566516 is a wasteful number, since it uses less digits than its factorization.

52566516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28661 (or 28653 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 52566516 is about 7250.2769602271. The cubic root of 52566516 is about 374.6016890789.

Adding to 52566516 its product of digits (54000), we get a square (52620516 = 7254²).

Subtracting 52566516 from its reverse (61566525), we obtain a palindrome (9000009).

The spelling of 52566516 in words is "fifty-two million, five hundred sixty-six thousand, five hundred sixteen".