13750881 has 4 divisors (see below), whose sum is σ = 18334512. Its totient is φ = 9167252.

The previous prime is 13750873. The next prime is 13750907. The reversal of 13750881 is 18805731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13750881 - 2³ = 13750873 is a prime.

It is a super-2 number, since 2×13750881² = 378173456552322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13750801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2291811 + ... + 2291816.

It is an arithmetic number, because the mean of its divisors is an integer number (4583628).

Almost surely, 2^13750881 is an apocalyptic number.

It is an amenable number.

13750881 is a deficient number, since it is larger than the sum of its proper divisors (4583631).

13750881 is an equidigital number, since it uses as much as digits as its factorization.

13750881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4583630.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 13750881 is about 3708.2180356608. The cubic root of 13750881 is about 239.5761093995.

The spelling of 13750881 in words is "thirteen million, seven hundred fifty thousand, eight hundred eighty-one".