13391541 has 8 divisors (see below), whose sum is σ = 19839360. Its totient is φ = 8927676.

The previous prime is 13391531. The next prime is 13391549. The reversal of 13391541 is 14519331.

13391541 is a `hidden beast` number, since 1 + 33 + 91 + 541 = 666.

It is not a de Polignac number, because 13391541 - 2⁵ = 13391509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 495983 = 13391541 / (1 + 3 + 3 + 9 + 1 + 5 + 4 + 1).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13391549) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 247965 + ... + 248018.

It is an arithmetic number, because the mean of its divisors is an integer number (2479920).

Almost surely, 2^13391541 is an apocalyptic number.

It is an amenable number.

13391541 is a deficient number, since it is larger than the sum of its proper divisors (6447819).

13391541 is an equidigital number, since it uses as much as digits as its factorization.

13391541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495992 (or 495986 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 13391541 is about 3659.4454497915. The cubic root of 13391541 is about 237.4707834790.

It can be divided in two parts, 133915 and 41, that added together give a square (133956 = 366²).

The spelling of 13391541 in words is "thirteen million, three hundred ninety-one thousand, five hundred forty-one".