55474416 has 40 divisors (see below), whose sum is σ = 159233360. Its totient is φ = 18491328.

The previous prime is 55474409. The next prime is 55474421. The reversal of 55474416 is 61447455.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 63775 + ... + 64638.

It is an arithmetic number, because the mean of its divisors is an integer number (3980834).

Almost surely, 2^55474416 is an apocalyptic number.

It is an amenable number.

55474416 is an abundant number, since it is smaller than the sum of its proper divisors (103758944).

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

55474416 is a wasteful number, since it uses less digits than its factorization.

55474416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128430 (or 128418 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 55474416 is about 7448.1149292959. The cubic root of 55474416 is about 381.3855604648.

The spelling of 55474416 in words is "fifty-five million, four hundred seventy-four thousand, four hundred sixteen".