55584564 has 24 divisors (see below), whose sum is σ = 148225728. Its totient is φ = 15881280.

The previous prime is 55584563. The next prime is 55584593. The reversal of 55584564 is 46548555.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55584563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330777 + ... + 330944.

It is an arithmetic number, because the mean of its divisors is an integer number (6176072).

Almost surely, 2^55584564 is an apocalyptic number.

It is an amenable number.

55584564 is an abundant number, since it is smaller than the sum of its proper divisors (92641164).

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

55584564 is a wasteful number, since it uses less digits than its factorization.

55584564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661735 (or 661733 counting only the distinct ones).

The product of its digits is 480000, while the sum is 42.

The square root of 55584564 is about 7455.5056166567. The cubic root of 55584564 is about 381.6378153876.

The spelling of 55584564 in words is "fifty-five million, five hundred eighty-four thousand, five hundred sixty-four".