55944864 has 96 divisors (see below), whose sum is σ = 165594240. Its totient is φ = 18372096.

The previous prime is 55944853. The next prime is 55944871. The reversal of 55944864 is 46844955.

It is a tau number, because it is divible by the number of its divisors (96).

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, 62629 + ... + 63515.

It is an arithmetic number, because the mean of its divisors is an integer number (1724940).

Almost surely, 2^55944864 is an apocalyptic number.

55944864 is a gapful number since it is divisible by the number (54) 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 55944864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82797120).

55944864 is an abundant number, since it is smaller than the sum of its proper divisors (109649376).

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

55944864 is a wasteful number, since it uses less digits than its factorization.

55944864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979 (or 965 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 55944864 is about 7479.6299373699. The cubic root of 55944864 is about 382.4606341648.

Subtracting from 55944864 its reverse (46844955), we obtain a palindrome (9099909).

The spelling of 55944864 in words is "fifty-five million, nine hundred forty-four thousand, eight hundred sixty-four".