55504287 has 12 divisors (see below), whose sum is σ = 80655120. Its totient is φ = 36780288.

The previous prime is 55504279. The next prime is 55504297. The reversal of 55504287 is 78240555.

It is a happy number.

It is not a de Polignac number, because 55504287 - 2³ = 55504279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55504277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16962 + ... + 19967.

It is an arithmetic number, because the mean of its divisors is an integer number (6721260).

Almost surely, 2^55504287 is an apocalyptic number.

55504287 is a deficient number, since it is larger than the sum of its proper divisors (25150833).

55504287 is a wasteful number, since it uses less digits than its factorization.

55504287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37102 (or 37099 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 55504287 is about 7450.1199319206. The cubic root of 55504287 is about 381.4540023683.

The spelling of 55504287 in words is "fifty-five million, five hundred four thousand, two hundred eighty-seven".