13872511 has 2 divisors, whose sum is σ = 13872512. Its totient is φ = 13872510.

The previous prime is 13872503. The next prime is 13872517. The reversal of 13872511 is 11527831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13872511 - 2³ = 13872503 is a prime.

It is a super-2 number, since 2×13872511² = 384893122890242, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13872511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13872517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6936255 + 6936256.

It is an arithmetic number, because the mean of its divisors is an integer number (6936256).

Almost surely, 2^13872511 is an apocalyptic number.

13872511 is a deficient number, since it is larger than the sum of its proper divisors (1).

13872511 is an equidigital number, since it uses as much as digits as its factorization.

13872511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 28.

The square root of 13872511 is about 3724.5819899688. The cubic root of 13872511 is about 240.2804072086.

The spelling of 13872511 in words is "thirteen million, eight hundred seventy-two thousand, five hundred eleven".