55118464 has 32 divisors (see below), whose sum is σ = 110355840. Its totient is φ = 27421440.

The previous prime is 55118443. The next prime is 55118489. The reversal of 55118464 is 46481155.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27579 + ... + 29509.

It is an arithmetic number, because the mean of its divisors is an integer number (3448620).

Almost surely, 2^55118464 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 55118464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55177920).

55118464 is an abundant number, since it is smaller than the sum of its proper divisors (55237376).

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

55118464 is a wasteful number, since it uses less digits than its factorization.

55118464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168 (or 2156 counting only the distinct ones).

The product of its digits is 19200, while the sum is 34.

The square root of 55118464 is about 7424.1810322755. The cubic root of 55118464 is about 380.5680884367.

The spelling of 55118464 in words is "fifty-five million, one hundred eighteen thousand, four hundred sixty-four".