13143551 has 2 divisors, whose sum is σ = 13143552. Its totient is φ = 13143550.

The previous prime is 13143539. The next prime is 13143553. The reversal of 13143551 is 15534131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13143551 is a prime.

It is a Sophie Germain prime.

Together with 13143553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13143553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6571775 + 6571776.

It is an arithmetic number, because the mean of its divisors is an integer number (6571776).

Almost surely, 2^13143551 is an apocalyptic number.

13143551 is a deficient number, since it is larger than the sum of its proper divisors (1).

13143551 is an equidigital number, since it uses as much as digits as its factorization.

13143551 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 13143551 is about 3625.4035637429. The cubic root of 13143551 is about 235.9957805910.

Adding to 13143551 its reverse (15534131), we get a palindrome (28677682).

The spelling of 13143551 in words is "thirteen million, one hundred forty-three thousand, five hundred fifty-one".