55418784 has 24 divisors (see below), whose sum is σ = 145474560. Its totient is φ = 18472896.

The previous prime is 55418777. The next prime is 55418789. The reversal of 55418784 is 48781455.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (55418789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288544 + ... + 288735.

It is an arithmetic number, because the mean of its divisors is an integer number (6061440).

Almost surely, 2^55418784 is an apocalyptic number.

It is an amenable number.

55418784 is an abundant number, since it is smaller than the sum of its proper divisors (90055776).

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

55418784 is a wasteful number, since it uses less digits than its factorization.

55418784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577292 (or 577284 counting only the distinct ones).

The product of its digits is 179200, while the sum is 42.

The square root of 55418784 is about 7444.3793562660. The cubic root of 55418784 is about 381.2580281746.

The spelling of 55418784 in words is "fifty-five million, four hundred eighteen thousand, seven hundred eighty-four".