56404500 has 96 divisors (see below), whose sum is σ = 169688064. Its totient is φ = 14544000.

The previous prime is 56404477. The next prime is 56404501. The reversal of 56404500 is 540465.

56404500 = 348² + 349² + ... + 595².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56404501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45894 + ... + 47106.

It is an arithmetic number, because the mean of its divisors is an integer number (1767584).

Almost surely, 2^56404500 is an apocalyptic number.

56404500 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 56404500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84844032).

56404500 is an abundant number, since it is smaller than the sum of its proper divisors (113283564).

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

56404500 is a wasteful number, since it uses less digits than its factorization.

56404500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266 (or 1254 counting only the distinct ones).

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

The square root of 56404500 is about 7510.2929370298. The cubic root of 56404500 is about 383.5051949387.

Adding to 56404500 its reverse (540465), we get a palindrome (56944965).

The spelling of 56404500 in words is "fifty-six million, four hundred four thousand, five hundred".