55152991509 has 32 divisors (see below), whose sum is σ = 92195159040. Its totient is φ = 28490822400.

The previous prime is 55152991501. The next prime is 55152991547. The reversal of 55152991509 is 90519925155.

It is not a de Polignac number, because 55152991509 - 2³ = 55152991501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55152991501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 625572 + ... + 708269.

It is an arithmetic number, because the mean of its divisors is an integer number (2881098720).

Almost surely, 2^55152991509 is an apocalyptic number.

It is an amenable number.

55152991509 is a deficient number, since it is larger than the sum of its proper divisors (37042167531).

55152991509 is a wasteful number, since it uses less digits than its factorization.

55152991509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334041.

The product of its (nonzero) digits is 911250, while the sum is 51.

The spelling of 55152991509 in words is "fifty-five billion, one hundred fifty-two million, nine hundred ninety-one thousand, five hundred nine".