13555279 has 2 divisors, whose sum is σ = 13555280. Its totient is φ = 13555278.

The previous prime is 13555261. The next prime is 13555301. The reversal of 13555279 is 97255531.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13555279 - 2⁵ = 13555247 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13555259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6777639 + 6777640.

It is an arithmetic number, because the mean of its divisors is an integer number (6777640).

Almost surely, 2^13555279 is an apocalyptic number.

13555279 is a deficient number, since it is larger than the sum of its proper divisors (1).

13555279 is an equidigital number, since it uses as much as digits as its factorization.

13555279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47250, while the sum is 37.

The square root of 13555279 is about 3681.7494482922. The cubic root of 13555279 is about 238.4347149929.

The spelling of 13555279 in words is "thirteen million, five hundred fifty-five thousand, two hundred seventy-nine".