55074816 has 140 divisors (see below), whose sum is σ = 166516812. Its totient is φ = 18137088.

The previous prime is 55074809. The next prime is 55074827. The reversal of 55074816 is 61847055.

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 9 ways as a sum of consecutive naturals, for example, 663511 + ... + 663593.

Almost surely, 2^55074816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55074816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83258406).

55074816 is an abundant number, since it is smaller than the sum of its proper divisors (111441996).

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

55074816 is an frugal number, since it uses more digits than its factorization.

55074816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 55074816 is about 7421.2408665937. The cubic root of 55074816 is about 380.4676053355.

The spelling of 55074816 in words is "fifty-five million, seventy-four thousand, eight hundred sixteen".