56645532 has 18 divisors (see below), whose sum is σ = 143187408. Its totient is φ = 18881832.

The previous prime is 56645531. The next prime is 56645539. The reversal of 56645532 is 23554665.

It is a happy number.

56645532 is a `hidden beast` number, since 5 + 6 + 645 + 5 + 3 + 2 = 666.

56645532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1573487 = 56645532 / (5 + 6 + 6 + 4 + 5 + 5 + 3 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56645531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 786708 + ... + 786779.

It is an arithmetic number, because the mean of its divisors is an integer number (7954856).

Almost surely, 2^56645532 is an apocalyptic number.

It is an amenable number.

56645532 is an abundant number, since it is smaller than the sum of its proper divisors (86541876).

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

56645532 is a wasteful number, since it uses less digits than its factorization.

56645532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573497 (or 1573492 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 56645532 is about 7526.3226080205. The cubic root of 56645532 is about 384.0506931773.

The spelling of 56645532 in words is "fifty-six million, six hundred forty-five thousand, five hundred thirty-two".