55478344 has 32 divisors (see below), whose sum is σ = 113702400. Its totient is φ = 25263360.

The previous prime is 55478329. The next prime is 55478351. The reversal of 55478344 is 44387455.

It is a junction number, because it is equal to n+sod(n) for n = 55478297 and 55478306.

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, 2364 + ... + 10795.

It is an arithmetic number, because the mean of its divisors is an integer number (3553200).

Almost surely, 2^55478344 is an apocalyptic number.

It is an amenable number.

55478344 is an abundant number, since it is smaller than the sum of its proper divisors (58224056).

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

55478344 is a wasteful number, since it uses less digits than its factorization.

55478344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13213 (or 13209 counting only the distinct ones).

The product of its digits is 268800, while the sum is 40.

The square root of 55478344 is about 7448.3786155109. The cubic root of 55478344 is about 381.3945618942.

The spelling of 55478344 in words is "fifty-five million, four hundred seventy-eight thousand, three hundred forty-four".