13990551 has 8 divisors (see below), whose sum is σ = 19158384. Its totient is φ = 9074880.

The previous prime is 13990549. The next prime is 13990583. The reversal of 13990551 is 15509931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13990551 - 2¹ = 13990549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13990511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62910 + ... + 63131.

It is an arithmetic number, because the mean of its divisors is an integer number (2394798).

Almost surely, 2^13990551 is an apocalyptic number.

13990551 is a deficient number, since it is larger than the sum of its proper divisors (5167833).

13990551 is a wasteful number, since it uses less digits than its factorization.

13990551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126081.

The product of its (nonzero) digits is 6075, while the sum is 33.

The square root of 13990551 is about 3740.3944979106. The cubic root of 13990551 is about 240.9599917517.

It can be divided in two parts, 13990 and 551, that added together give a palindrome (14541).

The spelling of 13990551 in words is "thirteen million, nine hundred ninety thousand, five hundred fifty-one".