13551859 has 2 divisors, whose sum is σ = 13551860. Its totient is φ = 13551858.

The previous prime is 13551851. The next prime is 13551869. The reversal of 13551859 is 95815531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13551859 - 2³ = 13551851 is a prime.

It is not a weakly prime, because it can be changed into another prime (13551851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6775929 + 6775930.

It is an arithmetic number, because the mean of its divisors is an integer number (6775930).

Almost surely, 2^13551859 is an apocalyptic number.

13551859 is a deficient number, since it is larger than the sum of its proper divisors (1).

13551859 is an equidigital number, since it uses as much as digits as its factorization.

13551859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 37.

The square root of 13551859 is about 3681.2849658781. The cubic root of 13551859 is about 238.4146609285.

The spelling of 13551859 in words is "thirteen million, five hundred fifty-one thousand, eight hundred fifty-nine".