52551756 has 18 divisors (see below), whose sum is σ = 132839252. Its totient is φ = 17517240.

The previous prime is 52551749. The next prime is 52551767. The reversal of 52551756 is 65715525.

It is a happy number.

52551756 is a `hidden beast` number, since 52 + 551 + 7 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1459771 = 52551756 / (5 + 2 + 5 + 5 + 1 + 7 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 52551756.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 729850 + ... + 729921.

Almost surely, 2^52551756 is an apocalyptic number.

It is an amenable number.

52551756 is an abundant number, since it is smaller than the sum of its proper divisors (80287496).

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

52551756 is a wasteful number, since it uses less digits than its factorization.

52551756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459781 (or 1459776 counting only the distinct ones).

The product of its digits is 52500, while the sum is 36.

The square root of 52551756 is about 7249.2589966148. The cubic root of 52551756 is about 374.5666246885.

The spelling of 52551756 in words is "fifty-two million, five hundred fifty-one thousand, seven hundred fifty-six".