55578336 has 48 divisors (see below), whose sum is σ = 159159168. Its totient is φ = 16841600.

The previous prime is 55578323. The next prime is 55578343. The reversal of 55578336 is 63387555.

It is a tau number, because it is divible by the number of its divisors (48).

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, 25260 + ... + 27371.

It is an arithmetic number, because the mean of its divisors is an integer number (3315816).

Almost surely, 2^55578336 is an apocalyptic number.

It is an amenable number.

55578336 is an abundant number, since it is smaller than the sum of its proper divisors (103580832).

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

55578336 is a wasteful number, since it uses less digits than its factorization.

55578336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52655 (or 52647 counting only the distinct ones).

The product of its digits is 378000, while the sum is 42.

The square root of 55578336 is about 7455.0879270469. The cubic root of 55578336 is about 381.6235612559.

The spelling of 55578336 in words is "fifty-five million, five hundred seventy-eight thousand, three hundred thirty-six".