56501432 has 72 divisors (see below), whose sum is σ = 121438800. Its totient is φ = 24628032.

The previous prime is 56501359. The next prime is 56501443. The reversal of 56501432 is 23410565.

56501432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 715169 + ... + 715247.

It is an arithmetic number, because the mean of its divisors is an integer number (1686650).

Almost surely, 2^56501432 is an apocalyptic number.

56501432 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56501432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60719400).

56501432 is an abundant number, since it is smaller than the sum of its proper divisors (64937368).

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

56501432 is a wasteful number, since it uses less digits than its factorization.

56501432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 56501432 is about 7516.7434438060. The cubic root of 56501432 is about 383.7247557373.

Adding to 56501432 its reverse (23410565), we get a palindrome (79911997).

The spelling of 56501432 in words is "fifty-six million, five hundred one thousand, four hundred thirty-two".