56109800 has 24 divisors (see below), whose sum is σ = 130455750. Its totient is φ = 22443840.

The previous prime is 56109787. The next prime is 56109817. The reversal of 56109800 is 890165.

It can be written as a sum of positive squares in 3 ways, for example, as 46977316 + 9132484 = 6854^2 + 3022^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140075 + ... + 140474.

Almost surely, 2^56109800 is an apocalyptic number.

56109800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56109800 is an abundant number, since it is smaller than the sum of its proper divisors (74345950).

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

56109800 is a wasteful number, since it uses less digits than its factorization.

56109800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280565 (or 280556 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 56109800 is about 7490.6475020521. The cubic root of 56109800 is about 382.8361207416.

Adding to 56109800 its reverse (890165), we get a palindrome (56999965).

The spelling of 56109800 in words is "fifty-six million, one hundred nine thousand, eight hundred".