56400450 has 24 divisors (see below), whose sum is σ = 139873488. Its totient is φ = 15040080.

The previous prime is 56400437. The next prime is 56400451. The reversal of 56400450 is 5400465.

It is a self number, because there is not a number n which added to its sum of digits gives 56400450.

It is not an unprimeable number, because it can be changed into a prime (56400451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187852 + ... + 188151.

It is an arithmetic number, because the mean of its divisors is an integer number (5828062).

Almost surely, 2^56400450 is an apocalyptic number.

56400450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

56400450 is an abundant number, since it is smaller than the sum of its proper divisors (83473038).

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

56400450 is a wasteful number, since it uses less digits than its factorization.

56400450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376018 (or 376013 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 56400450 is about 7510.0233022275. The cubic root of 56400450 is about 383.4960158057.

The spelling of 56400450 in words is "fifty-six million, four hundred thousand, four hundred fifty".