56021544 has 40 divisors (see below), whose sum is σ = 156914010. Its totient is φ = 18673632.

The previous prime is 56021543. The next prime is 56021549. The reversal of 56021544 is 44512065.

56021544 is a `hidden beast` number, since 5 + 602 + 1 + 54 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 54199044 + 1822500 = 7362^2 + 1350^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (56021543) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 42579 + ... + 43874.

Almost surely, 2^56021544 is an apocalyptic number.

56021544 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

56021544 is an abundant number, since it is smaller than the sum of its proper divisors (100892466).

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

56021544 is a wasteful number, since it uses less digits than its factorization.

56021544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86471 (or 86458 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 56021544 is about 7484.7541041774. The cubic root of 56021544 is about 382.6352923944.

It can be divided in two parts, 56021 and 544, that added together give a palindrome (56565).

The spelling of 56021544 in words is "fifty-six million, twenty-one thousand, five hundred forty-four".