55523478 has 16 divisors (see below), whose sum is σ = 111219120. Its totient is φ = 18479136.

The previous prime is 55523467. The next prime is 55523527. The reversal of 55523478 is 87432555.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2773 + ... + 10896.

It is an arithmetic number, because the mean of its divisors is an integer number (6951195).

Almost surely, 2^55523478 is an apocalyptic number.

55523478 is an abundant number, since it is smaller than the sum of its proper divisors (55695642).

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

55523478 is a wasteful number, since it uses less digits than its factorization.

55523478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14351.

The product of its digits is 168000, while the sum is 39.

The square root of 55523478 is about 7451.4077864522. The cubic root of 55523478 is about 381.4979607760.

The spelling of 55523478 in words is "fifty-five million, five hundred twenty-three thousand, four hundred seventy-eight".