13875091 has 4 divisors (see below), whose sum is σ = 13928112. Its totient is φ = 13822072.

The previous prime is 13875047. The next prime is 13875101. The reversal of 13875091 is 19057831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19057831 = 13 ⋅1465987.

It is a cyclic number.

It is not a de Polignac number, because 13875091 - 2¹⁷ = 13744019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13875031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26116 + ... + 26641.

It is an arithmetic number, because the mean of its divisors is an integer number (3482028).

Almost surely, 2^13875091 is an apocalyptic number.

13875091 is a deficient number, since it is larger than the sum of its proper divisors (53021).

13875091 is an equidigital number, since it uses as much as digits as its factorization.

13875091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53020.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 13875091 is about 3724.9283214580. The cubic root of 13875091 is about 240.2953020132.

The spelling of 13875091 in words is "thirteen million, eight hundred seventy-five thousand, ninety-one".