13872551 has 16 divisors (see below), whose sum is σ = 17560320. Its totient is φ = 10644480.

The previous prime is 13872533. The next prime is 13872557. The reversal of 13872551 is 15527831.

It is not a de Polignac number, because 13872551 - 2⁶ = 13872487 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 (13872557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3815 + ... + 6503.

It is an arithmetic number, because the mean of its divisors is an integer number (1097520).

Almost surely, 2^13872551 is an apocalyptic number.

13872551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13872551 is a deficient number, since it is larger than the sum of its proper divisors (3687769).

13872551 is a wasteful number, since it uses less digits than its factorization.

13872551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2774.

The product of its digits is 8400, while the sum is 32.

The square root of 13872551 is about 3724.5873596950. The cubic root of 13872551 is about 240.2806381499.

The spelling of 13872551 in words is "thirteen million, eight hundred seventy-two thousand, five hundred fifty-one".