55891534272 has 56 divisors (see below), whose sum is σ = 169005357696. Its totient is φ = 15969009408.

The previous prime is 55891534249. The next prime is 55891534297. The reversal of 55891534272 is 27243519855.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20791638 + ... + 20794325.

It is an arithmetic number, because the mean of its divisors is an integer number (3017952816).

Almost surely, 2^55891534272 is an apocalyptic number.

It is an amenable number.

55891534272 is an abundant number, since it is smaller than the sum of its proper divisors (113113823424).

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

55891534272 is a wasteful number, since it uses less digits than its factorization.

55891534272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41585985 (or 41585975 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 51.

The spelling of 55891534272 in words is "fifty-five billion, eight hundred ninety-one million, five hundred thirty-four thousand, two hundred seventy-two".