15552143 has 2 divisors, whose sum is σ = 15552144. Its totient is φ = 15552142.

The previous prime is 15552113. The next prime is 15552151. The reversal of 15552143 is 34125551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15552143 - 2¹⁸ = 15289999 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15552113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7776071 + 7776072.

It is an arithmetic number, because the mean of its divisors is an integer number (7776072).

Almost surely, 2^15552143 is an apocalyptic number.

15552143 is a deficient number, since it is larger than the sum of its proper divisors (1).

15552143 is an equidigital number, since it uses as much as digits as its factorization.

15552143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3000, while the sum is 26.

The square root of 15552143 is about 3943.6205446265. The cubic root of 15552143 is about 249.6108238153.

Adding to 15552143 its reverse (34125551), we get a palindrome (49677694).

The spelling of 15552143 in words is "fifteen million, five hundred fifty-two thousand, one hundred forty-three".