13540091 has 2 divisors, whose sum is σ = 13540092. Its totient is φ = 13540090.

The previous prime is 13540073. The next prime is 13540117. The reversal of 13540091 is 19004531.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13540091 - 2¹⁰ = 13539067 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13540001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6770045 + 6770046.

It is an arithmetic number, because the mean of its divisors is an integer number (6770046).

Almost surely, 2^13540091 is an apocalyptic number.

13540091 is a deficient number, since it is larger than the sum of its proper divisors (1).

13540091 is an equidigital number, since it uses as much as digits as its factorization.

13540091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 13540091 is about 3679.6862638002. The cubic root of 13540091 is about 238.3456303934.

The spelling of 13540091 in words is "thirteen million, five hundred forty thousand, ninety-one".