56156553400 has 24 divisors (see below), whose sum is σ = 130563987120. Its totient is φ = 22462621280.

The previous prime is 56156553389. The next prime is 56156553403. The reversal of 56156553400 is 435565165.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56156553403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140391184 + ... + 140391583.

It is an arithmetic number, because the mean of its divisors is an integer number (5440166130).

Almost surely, 2^56156553400 is an apocalyptic number.

56156553400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56156553400 is an abundant number, since it is smaller than the sum of its proper divisors (74407433720).

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

56156553400 is a wasteful number, since it uses less digits than its factorization.

56156553400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280782783 (or 280782774 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 56156553400 in words is "fifty-six billion, one hundred fifty-six million, five hundred fifty-three thousand, four hundred".