13551143 has 2 divisors, whose sum is σ = 13551144. Its totient is φ = 13551142.

The previous prime is 13551137. The next prime is 13551151. The reversal of 13551143 is 34115531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13551143 - 2⁶ = 13551079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13551113) 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, 6775571 + 6775572.

It is an arithmetic number, because the mean of its divisors is an integer number (6775572).

Almost surely, 2^13551143 is an apocalyptic number.

13551143 is a deficient number, since it is larger than the sum of its proper divisors (1).

13551143 is an equidigital number, since it uses as much as digits as its factorization.

13551143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 900, while the sum is 23.

The square root of 13551143 is about 3681.1877159417. The cubic root of 13551143 is about 238.4104620482.

Adding to 13551143 its reverse (34115531), we get a palindrome (47666674).

The spelling of 13551143 in words is "thirteen million, five hundred fifty-one thousand, one hundred forty-three".