56771544 has 64 divisors (see below), whose sum is σ = 155923200. Its totient is φ = 17145216.

The previous prime is 56771543. The next prime is 56771549. The reversal of 56771544 is 44517765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56771543) 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, 7782 + ... + 13194.

It is an arithmetic number, because the mean of its divisors is an integer number (2436300).

Almost surely, 2^56771544 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 56771544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77961600).

56771544 is an abundant number, since it is smaller than the sum of its proper divisors (99151656).

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

56771544 is a wasteful number, since it uses less digits than its factorization.

56771544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5464 (or 5460 counting only the distinct ones).

The product of its digits is 117600, while the sum is 39.

The square root of 56771544 is about 7534.6893764773. The cubic root of 56771544 is about 384.3352649255.

The spelling of 56771544 in words is "fifty-six million, seven hundred seventy-one thousand, five hundred forty-four".