55598388 has 12 divisors (see below), whose sum is σ = 129729600. Its totient is φ = 18532792.

The previous prime is 55598369. The next prime is 55598399. The reversal of 55598388 is 88389555.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 55598388.

It is a congruent number.

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, 2316588 + ... + 2316611.

It is an arithmetic number, because the mean of its divisors is an integer number (10810800).

Almost surely, 2^55598388 is an apocalyptic number.

It is an amenable number.

55598388 is an abundant number, since it is smaller than the sum of its proper divisors (74131212).

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

55598388 is a wasteful number, since it uses less digits than its factorization.

55598388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4633206 (or 4633204 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 51.

The square root of 55598388 is about 7456.4326591206. The cubic root of 55598388 is about 381.6694508123.

The spelling of 55598388 in words is "fifty-five million, five hundred ninety-eight thousand, three hundred eighty-eight".