55252656 has 120 divisors (see below), whose sum is σ = 162779760. Its totient is φ = 17472000.

The previous prime is 55252649. The next prime is 55252657. The reversal of 55252656 is 65625255.

55252656 is a `hidden beast` number, since 552 + 52 + 6 + 56 = 666.

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 55252656.

It is not an unprimeable number, because it can be changed into a prime (55252657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 421711 + ... + 421841.

It is an arithmetic number, because the mean of its divisors is an integer number (1356498).

Almost surely, 2^55252656 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 55252656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81389880).

55252656 is an abundant number, since it is smaller than the sum of its proper divisors (107527104).

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

55252656 is a wasteful number, since it uses less digits than its factorization.

55252656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 266 counting only the distinct ones).

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

The square root of 55252656 is about 7433.2130334062. The cubic root of 55252656 is about 380.8766831776.

The spelling of 55252656 in words is "fifty-five million, two hundred fifty-two thousand, six hundred fifty-six".