55998123 has 16 divisors (see below), whose sum is σ = 78904320. Its totient is φ = 35253504.

The previous prime is 55998109. The next prime is 55998193. The reversal of 55998123 is 32189955.

It is not a de Polignac number, because 55998123 - 2⁹ = 55997611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55998193) 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, 315 + ... + 10587.

It is an arithmetic number, because the mean of its divisors is an integer number (4931520).

Almost surely, 2^55998123 is an apocalyptic number.

55998123 is a deficient number, since it is larger than the sum of its proper divisors (22906197).

55998123 is a wasteful number, since it uses less digits than its factorization.

55998123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10378.

The product of its digits is 97200, while the sum is 42.

The square root of 55998123 is about 7483.1893601592. The cubic root of 55998123 is about 382.5819620164.

The spelling of 55998123 in words is "fifty-five million, nine hundred ninety-eight thousand, one hundred twenty-three".