55512756 has 96 divisors (see below), whose sum is σ = 163228800. Its totient is φ = 16174080.

The previous prime is 55512749. The next prime is 55512761. The reversal of 55512756 is 65721555.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 55512756.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25636 + ... + 27716.

It is an arithmetic number, because the mean of its divisors is an integer number (1700300).

Almost surely, 2^55512756 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 55512756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81614400).

55512756 is an abundant number, since it is smaller than the sum of its proper divisors (107716044).

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

55512756 is a wasteful number, since it uses less digits than its factorization.

55512756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126 (or 2118 counting only the distinct ones).

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

The square root of 55512756 is about 7450.6882903528. The cubic root of 55512756 is about 381.4734024894.

The spelling of 55512756 in words is "fifty-five million, five hundred twelve thousand, seven hundred fifty-six".