56909544 has 64 divisors (see below), whose sum is σ = 149783040. Its totient is φ = 17983680.

The previous prime is 56909543. The next prime is 56909549. The reversal of 56909544 is 44590965.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 56909496 and 56909505.

It is not an unprimeable number, because it can be changed into a prime (56909543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71919 + ... + 72705.

It is an arithmetic number, because the mean of its divisors is an integer number (2340360).

Almost surely, 2^56909544 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 56909544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74891520).

56909544 is an abundant number, since it is smaller than the sum of its proper divisors (92873496).

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

56909544 is a wasteful number, since it uses less digits than its factorization.

56909544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950 (or 946 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 56909544 is about 7543.8414617488. The cubic root of 56909544 is about 384.6464263849.

The spelling of 56909544 in words is "fifty-six million, nine hundred nine thousand, five hundred forty-four".