13872155 has 16 divisors (see below), whose sum is σ = 18240768. Its totient is φ = 10044000.

The previous prime is 13872137. The next prime is 13872169. The reversal of 13872155 is 55127831.

It is a de Polignac number, because none of the positive numbers 2^k-13872155 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 16700 + ... + 17510.

It is an arithmetic number, because the mean of its divisors is an integer number (1140048).

Almost surely, 2^13872155 is an apocalyptic number.

13872155 is a deficient number, since it is larger than the sum of its proper divisors (4368613).

13872155 is a wasteful number, since it uses less digits than its factorization.

13872155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138.

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

The square root of 13872155 is about 3724.5341990644. The cubic root of 13872155 is about 240.2783518115.

Adding to 13872155 its reverse (55127831), we get a palindrome (68999986).

The spelling of 13872155 in words is "thirteen million, eight hundred seventy-two thousand, one hundred fifty-five".