55995288 has 64 divisors (see below), whose sum is σ = 148262400. Its totient is φ = 17592960.

The previous prime is 55995281. The next prime is 55995301. The reversal of 55995288 is 88259955.

It is a Cunningham number, because it is equal to 7483²-1.

It is a self number, because there is not a number n which added to its sum of digits gives 55995288.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55995281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28993 + ... + 30863.

It is an arithmetic number, because the mean of its divisors is an integer number (2316600).

Almost surely, 2^55995288 is an apocalyptic number.

55995288 is a gapful number since it is divisible by the number (58) 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 55995288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74131200).

55995288 is an abundant number, since it is smaller than the sum of its proper divisors (92267112).

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

55995288 is a wasteful number, since it uses less digits than its factorization.

55995288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952 (or 1948 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 51.

The square root of 55995288 is about 7482.9999331819. Note that the first 4 decimals coincide. The cubic root of 55995288 is about 382.5755056205.

The spelling of 55995288 in words is "fifty-five million, nine hundred ninety-five thousand, two hundred eighty-eight".