13155559 has 2 divisors, whose sum is σ = 13155560. Its totient is φ = 13155558.

The previous prime is 13155551. The next prime is 13155587. The reversal of 13155559 is 95555131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13155559 - 2³ = 13155551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13155551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6577779 + 6577780.

It is an arithmetic number, because the mean of its divisors is an integer number (6577780).

Almost surely, 2^13155559 is an apocalyptic number.

13155559 is a deficient number, since it is larger than the sum of its proper divisors (1).

13155559 is an equidigital number, since it uses as much as digits as its factorization.

13155559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16875, while the sum is 34.

The square root of 13155559 is about 3627.0592771555. The cubic root of 13155559 is about 236.0676276074.

The spelling of 13155559 in words is "thirteen million, one hundred fifty-five thousand, five hundred fifty-nine".