55624623 has 4 divisors (see below), whose sum is σ = 74166168. Its totient is φ = 37083080.

The previous prime is 55624607. The next prime is 55624631. The reversal of 55624623 is 32642655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55624623 - 2⁴ = 55624607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55624643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9270768 + ... + 9270773.

It is an arithmetic number, because the mean of its divisors is an integer number (18541542).

Almost surely, 2^55624623 is an apocalyptic number.

55624623 is a deficient number, since it is larger than the sum of its proper divisors (18541545).

55624623 is a wasteful number, since it uses less digits than its factorization.

55624623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18541544.

The product of its digits is 43200, while the sum is 33.

The square root of 55624623 is about 7458.1916709079. The cubic root of 55624623 is about 381.7294736766.

The spelling of 55624623 in words is "fifty-five million, six hundred twenty-four thousand, six hundred twenty-three".