13115535 has 16 divisors (see below), whose sum is σ = 21029856. Its totient is φ = 6979968.

The previous prime is 13115533. The next prime is 13115537. The reversal of 13115535 is 53551131.

It is an interprime number because it is at equal distance from previous prime (13115533) and next prime (13115537).

It is not a de Polignac number, because 13115535 - 2¹ = 13115533 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13115533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12657 + ... + 13653.

It is an arithmetic number, because the mean of its divisors is an integer number (1314366).

Almost surely, 2^13115535 is an apocalyptic number.

13115535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13115535 is a deficient number, since it is larger than the sum of its proper divisors (7914321).

13115535 is an equidigital number, since it uses as much as digits as its factorization.

13115535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882.

The product of its digits is 1125, while the sum is 24.

The square root of 13115535 is about 3621.5376568524. The cubic root of 13115535 is about 235.8279831916.

Adding to 13115535 its reverse (53551131), we get a palindrome (66666666).

The spelling of 13115535 in words is "thirteen million, one hundred fifteen thousand, five hundred thirty-five".