55643504 has 20 divisors (see below), whose sum is σ = 123210864. Its totient is φ = 23847168.

The previous prime is 55643503. The next prime is 55643551. The reversal of 55643504 is 40534655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55643503) 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 3 ways as a sum of consecutive naturals, for example, 248297 + ... + 248520.

Almost surely, 2^55643504 is an apocalyptic number.

It is an amenable number.

55643504 is an abundant number, since it is smaller than the sum of its proper divisors (67567360).

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

55643504 is a wasteful number, since it uses less digits than its factorization.

55643504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496832 (or 496826 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 55643504 is about 7459.4573529178. The cubic root of 55643504 is about 381.7726597003.

The spelling of 55643504 in words is "fifty-five million, six hundred forty-three thousand, five hundred four".