55356912 has 80 divisors (see below), whose sum is σ = 171134880. Its totient is φ = 17031168.

The previous prime is 55356877. The next prime is 55356949. The reversal of 55356912 is 21965355.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 688 + ... + 10544.

It is an arithmetic number, because the mean of its divisors is an integer number (2139186).

Almost surely, 2^55356912 is an apocalyptic number.

55356912 is a gapful number since it is divisible by the number (52) 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 55356912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85567440).

55356912 is an abundant number, since it is smaller than the sum of its proper divisors (115777968).

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

55356912 is a wasteful number, since it uses less digits than its factorization.

55356912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9887 (or 9875 counting only the distinct ones).

The product of its digits is 40500, while the sum is 36.

The square root of 55356912 is about 7440.2225773158. Note that the first 3 decimals coincide. The cubic root of 55356912 is about 381.1160908557.

The spelling of 55356912 in words is "fifty-five million, three hundred fifty-six thousand, nine hundred twelve".