55287232559 has 16 divisors (see below), whose sum is σ = 61146731520. Its totient is φ = 49669390560.

The previous prime is 55287232529. The next prime is 55287232577. The reversal of 55287232559 is 95523278255.

It is a cyclic number.

It is not a de Polignac number, because 55287232559 - 2²⁸ = 55018797103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55287232559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55287232519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143387 + ... + 362124.

It is an arithmetic number, because the mean of its divisors is an integer number (3821670720).

Almost surely, 2^55287232559 is an apocalyptic number.

55287232559 is a deficient number, since it is larger than the sum of its proper divisors (5859498961).

55287232559 is a wasteful number, since it uses less digits than its factorization.

55287232559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505750.

The product of its digits is 7560000, while the sum is 53.

The spelling of 55287232559 in words is "fifty-five billion, two hundred eighty-seven million, two hundred thirty-two thousand, five hundred fifty-nine".