56556402 has 64 divisors (see below), whose sum is σ = 136249344. Its totient is φ = 15301440.

The previous prime is 56556389. The next prime is 56556403. The reversal of 56556402 is 20465565.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (56556403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122452 + ... + 122912.

It is an arithmetic number, because the mean of its divisors is an integer number (2128896).

Almost surely, 2^56556402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56556402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68124672).

56556402 is an abundant number, since it is smaller than the sum of its proper divisors (79692942).

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

56556402 is a wasteful number, since it uses less digits than its factorization.

56556402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623.

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 56556402 is about 7520.3990585607. The cubic root of 56556402 is about 383.8491567907.

The spelling of 56556402 in words is "fifty-six million, five hundred fifty-six thousand, four hundred two".