15530252113 has 2 divisors, whose sum is σ = 15530252114. Its totient is φ = 15530252112.

The previous prime is 15530252077. The next prime is 15530252189. The reversal of 15530252113 is 31125203551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15123342529 + 406909584 = 122977^2 + 20172^2 .

It is a cyclic number.

It is not a de Polignac number, because 15530252113 - 2²⁵ = 15496697681 is a prime.

It is not a weakly prime, because it can be changed into another prime (15530252713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7765126056 + 7765126057.

It is an arithmetic number, because the mean of its divisors is an integer number (7765126057).

Almost surely, 2^15530252113 is an apocalyptic number.

It is an amenable number.

15530252113 is a deficient number, since it is larger than the sum of its proper divisors (1).

15530252113 is an equidigital number, since it uses as much as digits as its factorization.

15530252113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 15530252113 its reverse (31125203551), we get a palindrome (46655455664).

The spelling of 15530252113 in words is "fifteen billion, five hundred thirty million, two hundred fifty-two thousand, one hundred thirteen".