13551617 has 4 divisors (see below), whose sum is σ = 14264880. Its totient is φ = 12838356.

The previous prime is 13551599. The next prime is 13551649. The reversal of 13551617 is 71615531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71615531 = 13 ⋅5508887.

It is a cyclic number.

It is not a de Polignac number, because 13551617 - 2¹⁴ = 13535233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13551617.

It is not an unprimeable number, because it can be changed into a prime (13551697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356603 + ... + 356640.

It is an arithmetic number, because the mean of its divisors is an integer number (3566220).

Almost surely, 2^13551617 is an apocalyptic number.

It is an amenable number.

13551617 is a deficient number, since it is larger than the sum of its proper divisors (713263).

13551617 is an equidigital number, since it uses as much as digits as its factorization.

13551617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713262.

The product of its digits is 3150, while the sum is 29.

The square root of 13551617 is about 3681.2520967736. The cubic root of 13551617 is about 238.4132417704.

The spelling of 13551617 in words is "thirteen million, five hundred fifty-one thousand, six hundred seventeen".