55996123 has 4 divisors (see below), whose sum is σ = 56012688. Its totient is φ = 55979560.

The previous prime is 55996103. The next prime is 55996159. The reversal of 55996123 is 32169955.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32169955 = 5 ⋅6433991.

It is a cyclic number.

It is not a de Polignac number, because 55996123 - 2²⁵ = 22441691 is a prime.

It is a super-2 number, since 2×55996123² = 6271131582062258, which contains 22 as substring.

It is a deceptive number, since it divides R_55996122.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55996103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1183 + ... + 10648.

It is an arithmetic number, because the mean of its divisors is an integer number (14003172).

Almost surely, 2^55996123 is an apocalyptic number.

55996123 is the 4733-rd heptagonal number.

55996123 is a deficient number, since it is larger than the sum of its proper divisors (16565).

55996123 is a wasteful number, since it uses less digits than its factorization.

55996123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16564.

The product of its digits is 72900, while the sum is 40.

The square root of 55996123 is about 7483.0557261055. The cubic root of 55996123 is about 382.5774072624.

The spelling of 55996123 in words is "fifty-five million, nine hundred ninety-six thousand, one hundred twenty-three".