13115527 has 2 divisors, whose sum is σ = 13115528. Its totient is φ = 13115526.

The previous prime is 13115513. The next prime is 13115533. The reversal of 13115527 is 72551131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13115527 - 2²³ = 4726919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13115537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6557763 + 6557764.

It is an arithmetic number, because the mean of its divisors is an integer number (6557764).

Almost surely, 2^13115527 is an apocalyptic number.

13115527 is a deficient number, since it is larger than the sum of its proper divisors (1).

13115527 is an equidigital number, since it uses as much as digits as its factorization.

13115527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1050, while the sum is 25.

The square root of 13115527 is about 3621.5365523490. The cubic root of 13115527 is about 235.8279352428.

Adding to 13115527 its reverse (72551131), we get a palindrome (85666658).

The spelling of 13115527 in words is "thirteen million, one hundred fifteen thousand, five hundred twenty-seven".