13779553 has 16 divisors (see below), whose sum is σ = 15131520. Its totient is φ = 12507264.

The previous prime is 13779539. The next prime is 13779587. The reversal of 13779553 is 35597731.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13779553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13779533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48550 + ... + 48832.

It is an arithmetic number, because the mean of its divisors is an integer number (945720).

Almost surely, 2^13779553 is an apocalyptic number.

It is an amenable number.

13779553 is a deficient number, since it is larger than the sum of its proper divisors (1351967).

13779553 is a wasteful number, since it uses less digits than its factorization.

13779553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408.

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

The square root of 13779553 is about 3712.0820303436. The cubic root of 13779553 is about 239.7425074035.

The spelling of 13779553 in words is "thirteen million, seven hundred seventy-nine thousand, five hundred fifty-three".