56523900 has 144 divisors (see below), whose sum is σ = 173426400. Its totient is φ = 14192640.

The previous prime is 56523889. The next prime is 56523923. The reversal of 56523900 is 932565.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 635056 + ... + 635144.

It is an arithmetic number, because the mean of its divisors is an integer number (1204350).

Almost surely, 2^56523900 is an apocalyptic number.

56523900 is a gapful number since it is divisible by the number (50) 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 56523900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86713200).

56523900 is an abundant number, since it is smaller than the sum of its proper divisors (116902500).

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

56523900 is a wasteful number, since it uses less digits than its factorization.

56523900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 56523900 is about 7518.2378254482. The cubic root of 56523900 is about 383.7756121786.

The spelling of 56523900 in words is "fifty-six million, five hundred twenty-three thousand, nine hundred".