55445598 has 24 divisors (see below), whose sum is σ = 129373608. Its totient is φ = 17060112.

The previous prime is 55445587. The next prime is 55445603. The reversal of 55445598 is 89554455.

55445598 is a `hidden beast` number, since 5 + 54 + 4 + 5 + 598 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118240 + ... + 118707.

It is an arithmetic number, because the mean of its divisors is an integer number (5390567).

Almost surely, 2^55445598 is an apocalyptic number.

55445598 is an abundant number, since it is smaller than the sum of its proper divisors (73928010).

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

55445598 is a wasteful number, since it uses less digits than its factorization.

55445598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236968 (or 236965 counting only the distinct ones).

The product of its digits is 720000, while the sum is 45.

The square root of 55445598 is about 7446.1800945183. The cubic root of 55445598 is about 381.3195079575.

The spelling of 55445598 in words is "fifty-five million, four hundred forty-five thousand, five hundred ninety-eight".