55287431589 has 48 divisors (see below), whose sum is σ = 81929766912. Its totient is φ = 32964672384.

The previous prime is 55287431519. The next prime is 55287431597. The reversal of 55287431589 is 98513478255.

It is a de Polignac number, because none of the positive numbers 2^k-55287431589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55287431519) 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 47 ways as a sum of consecutive naturals, for example, 9155079 + ... + 9161115.

It is an arithmetic number, because the mean of its divisors is an integer number (1706870144).

Almost surely, 2^55287431589 is an apocalyptic number.

It is an amenable number.

55287431589 is a deficient number, since it is larger than the sum of its proper divisors (26642335323).

55287431589 is a wasteful number, since it uses less digits than its factorization.

55287431589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6266 (or 6223 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 57.

The spelling of 55287431589 in words is "fifty-five billion, two hundred eighty-seven million, four hundred thirty-one thousand, five hundred eighty-nine".