56440500 has 96 divisors (see below), whose sum is σ = 166053888. Its totient is φ = 14896000.

The previous prime is 56440499. The next prime is 56440519. The reversal of 56440500 is 504465.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 286402 + ... + 286598.

It is an arithmetic number, because the mean of its divisors is an integer number (1729728).

Almost surely, 2^56440500 is an apocalyptic number.

56440500 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 56440500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83026944).

56440500 is an abundant number, since it is smaller than the sum of its proper divisors (109613388).

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

56440500 is a wasteful number, since it uses less digits than its factorization.

56440500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410 (or 398 counting only the distinct ones).

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

The square root of 56440500 is about 7512.6892655027. The cubic root of 56440500 is about 383.5867679267.

Adding to 56440500 its reverse (504465), we get a palindrome (56944965).

The spelling of 56440500 in words is "fifty-six million, four hundred forty thousand, five hundred".