13553779 has 2 divisors, whose sum is σ = 13553780. Its totient is φ = 13553778.

The previous prime is 13553767. The next prime is 13553801. The reversal of 13553779 is 97735531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13553779 - 2⁵ = 13553747 is a prime.

It is a Chen prime.

It is equal to p₈₈₂₈₉₅ and since 13553779 and 882895 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13551779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6776889 + 6776890.

It is an arithmetic number, because the mean of its divisors is an integer number (6776890).

Almost surely, 2^13553779 is an apocalyptic number.

13553779 is a deficient number, since it is larger than the sum of its proper divisors (1).

13553779 is an equidigital number, since it uses as much as digits as its factorization.

13553779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 99225, while the sum is 40.

The square root of 13553779 is about 3681.5457351498. The cubic root of 13553779 is about 238.4259197660.

The spelling of 13553779 in words is "thirteen million, five hundred fifty-three thousand, seven hundred seventy-nine".