13551798 has 16 divisors (see below), whose sum is σ = 29188656. Its totient is φ = 4169760.

The previous prime is 13551779. The next prime is 13551799. The reversal of 13551798 is 89715531.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13551799) 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 in 7 ways as a sum of consecutive naturals, for example, 86793 + ... + 86948.

It is an arithmetic number, because the mean of its divisors is an integer number (1824291).

Almost surely, 2^13551798 is an apocalyptic number.

13551798 is an abundant number, since it is smaller than the sum of its proper divisors (15636858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13551798 is a wasteful number, since it uses less digits than its factorization.

13551798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173759.

The product of its digits is 37800, while the sum is 39.

The square root of 13551798 is about 3681.2766807183. The cubic root of 13551798 is about 238.4143032085.

The spelling of 13551798 in words is "thirteen million, five hundred fifty-one thousand, seven hundred ninety-eight".