15135563 has 2 divisors, whose sum is σ = 15135564. Its totient is φ = 15135562.

The previous prime is 15135539. The next prime is 15135599. The reversal of 15135563 is 36553151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15135563 - 2⁶ = 15135499 is a prime.

It is not a weakly prime, because it can be changed into another prime (15131563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7567781 + 7567782.

It is an arithmetic number, because the mean of its divisors is an integer number (7567782).

Almost surely, 2^15135563 is an apocalyptic number.

15135563 is a deficient number, since it is larger than the sum of its proper divisors (1).

15135563 is an equidigital number, since it uses as much as digits as its factorization.

15135563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6750, while the sum is 29.

The square root of 15135563 is about 3890.4450902178. The cubic root of 15135563 is about 247.3619295883.

The spelling of 15135563 in words is "fifteen million, one hundred thirty-five thousand, five hundred sixty-three".