13745091 has 4 divisors (see below), whose sum is σ = 18326792. Its totient is φ = 9163392.

The previous prime is 13745063. The next prime is 13745107. The reversal of 13745091 is 19054731.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13745091 - 2²¹ = 11647939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13745491) 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, 2290846 + ... + 2290851.

It is an arithmetic number, because the mean of its divisors is an integer number (4581698).

Almost surely, 2^13745091 is an apocalyptic number.

13745091 is a deficient number, since it is larger than the sum of its proper divisors (4581701).

13745091 is an equidigital number, since it uses as much as digits as its factorization.

13745091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4581700.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 13745091 is about 3707.4372550321. The cubic root of 13745091 is about 239.5424790595.

The spelling of 13745091 in words is "thirteen million, seven hundred forty-five thousand, ninety-one".