55456623 has 16 divisors (see below), whose sum is σ = 82790400. Its totient is φ = 36686520.

The previous prime is 55456619. The next prime is 55456631. The reversal of 55456623 is 32665455.

It is a happy number.

It is not a de Polignac number, because 55456623 - 2² = 55456619 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55456633) 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, 4303 + ... + 11376.

It is an arithmetic number, because the mean of its divisors is an integer number (5174400).

Almost surely, 2^55456623 is an apocalyptic number.

55456623 is a deficient number, since it is larger than the sum of its proper divisors (27333777).

55456623 is a wasteful number, since it uses less digits than its factorization.

55456623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15819 (or 15813 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 55456623 is about 7446.9203701933. The cubic root of 55456623 is about 381.3447805917.

The spelling of 55456623 in words is "fifty-five million, four hundred fifty-six thousand, six hundred twenty-three".