56387574 has 48 divisors (see below), whose sum is σ = 127196160. Its totient is φ = 18033840.

The previous prime is 56387563. The next prime is 56387579. The reversal of 56387574 is 47578365.

56387574 is a `hidden beast` number, since 5 + 638 + 7 + 5 + 7 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56387579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77199 + ... + 77925.

It is an arithmetic number, because the mean of its divisors is an integer number (2649920).

Almost surely, 2^56387574 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56387574, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63598080).

56387574 is an abundant number, since it is smaller than the sum of its proper divisors (70808586).

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

56387574 is a wasteful number, since it uses less digits than its factorization.

56387574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905 (or 902 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 56387574 is about 7509.1659989642. The cubic root of 56387574 is about 383.4668300426.

The spelling of 56387574 in words is "fifty-six million, three hundred eighty-seven thousand, five hundred seventy-four".