52565436 has 240 divisors, whose sum is σ = 178886400. Its totient is φ = 13335840.

The previous prime is 52565423. The next prime is 52565449. The reversal of 52565436 is 63456525.

It is a happy number.

52565436 is a `hidden beast` number, since 52 + 565 + 43 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (52565423) and next prime (52565449).

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

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 52565436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1222431 + ... + 1222473.

It is an arithmetic number, because the mean of its divisors is an integer number (745360).

Almost surely, 2^52565436 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 52565436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89443200).

52565436 is an abundant number, since it is smaller than the sum of its proper divisors (126320964).

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

52565436 is a wasteful number, since it uses less digits than its factorization.

52565436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 66 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 52565436 is about 7250.2024799312. The cubic root of 52565436 is about 374.5991236144.

The spelling of 52565436 in words is "fifty-two million, five hundred sixty-five thousand, four hundred thirty-six".