13881553 has 8 divisors (see below), whose sum is σ = 16188800. Its totient is φ = 11898180.

The previous prime is 13881551. The next prime is 13881559. The reversal of 13881553 is 35518831.

13881553 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13881553 - 2¹ = 13881551 is a prime.

It is a Duffinian number.

13881553 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (13881551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19893 + ... + 20578.

It is an arithmetic number, because the mean of its divisors is an integer number (2023600).

Almost surely, 2^13881553 is an apocalyptic number.

It is an amenable number.

13881553 is a deficient number, since it is larger than the sum of its proper divisors (2307247).

13881553 is an frugal number, since it uses more digits than its factorization.

13881553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40492 (or 40478 counting only the distinct ones).

The product of its digits is 14400, while the sum is 34.

The square root of 13881553 is about 3725.7956197301. The cubic root of 13881553 is about 240.3326002009.

The spelling of 13881553 in words is "thirteen million, eight hundred eighty-one thousand, five hundred fifty-three".