13551779 has 2 divisors, whose sum is σ = 13551780. Its totient is φ = 13551778.

The previous prime is 13551757. The next prime is 13551799. The reversal of 13551779 is 97715531.

13551779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13551779 - 2⁸ = 13551523 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13551719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6775889 + 6775890.

It is an arithmetic number, because the mean of its divisors is an integer number (6775890).

Almost surely, 2^13551779 is an apocalyptic number.

13551779 is a deficient number, since it is larger than the sum of its proper divisors (1).

13551779 is an equidigital number, since it uses as much as digits as its factorization.

13551779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33075, while the sum is 38.

The square root of 13551779 is about 3681.2741000909. The cubic root of 13551779 is about 238.4141917872.

The spelling of 13551779 in words is "thirteen million, five hundred fifty-one thousand, seven hundred seventy-nine".