52565526 has 48 divisors (see below), whose sum is σ = 125667360. Its totient is φ = 15776640.

The previous prime is 52565509. The next prime is 52565543. The reversal of 52565526 is 62556525.

52565526 is a `hidden beast` number, since 52 + 56 + 552 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (52565509) and next prime (52565543).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6855 + ... + 12333.

It is an arithmetic number, because the mean of its divisors is an integer number (2618070).

Almost surely, 2^52565526 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52565526, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62833680).

52565526 is an abundant number, since it is smaller than the sum of its proper divisors (73101834).

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

52565526 is a wasteful number, since it uses less digits than its factorization.

52565526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5541 (or 5538 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 52565526 is about 7250.2086866517. The cubic root of 52565526 is about 374.5993374044.

Subtracting 52565526 from its reverse (62556525), we obtain a palindrome (9990999).

The spelling of 52565526 in words is "fifty-two million, five hundred sixty-five thousand, five hundred twenty-six".