56553336 has 128 divisors (see below), whose sum is σ = 181670400. Its totient is φ = 15966720.

The previous prime is 56553313. The next prime is 56553337. The reversal of 56553336 is 63335565.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 56553336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56553337) 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, 170691 + ... + 171021.

It is an arithmetic number, because the mean of its divisors is an integer number (1419300).

Almost surely, 2^56553336 is an apocalyptic number.

56553336 is a gapful number since it is divisible by the number (56) 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 56553336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90835200).

56553336 is an abundant number, since it is smaller than the sum of its proper divisors (125117064).

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

56553336 is a wasteful number, since it uses less digits than its factorization.

56553336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 456 counting only the distinct ones).

The product of its digits is 121500, while the sum is 36.

The square root of 56553336 is about 7520.1952102322. The cubic root of 56553336 is about 383.8422203359.

The spelling of 56553336 in words is "fifty-six million, five hundred fifty-three thousand, three hundred thirty-six".