13531202551 has 4 divisors (see below), whose sum is σ = 13532222704. Its totient is φ = 13530182400.

The previous prime is 13531202543. The next prime is 13531202593. The reversal of 13531202551 is 15520213531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13531202551 - 2³ = 13531202543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531202651) 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 3 ways as a sum of consecutive naturals, for example, 489915 + ... + 516796.

It is an arithmetic number, because the mean of its divisors is an integer number (3383055676).

Almost surely, 2^13531202551 is an apocalyptic number.

13531202551 is a deficient number, since it is larger than the sum of its proper divisors (1020153).

13531202551 is a wasteful number, since it uses less digits than its factorization.

13531202551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020152.

The product of its (nonzero) digits is 4500, while the sum is 28.

The spelling of 13531202551 in words is "thirteen billion, five hundred thirty-one million, two hundred two thousand, five hundred fifty-one".