12563535 has 16 divisors (see below), whose sum is σ = 20645856. Its totient is φ = 6519168.

The previous prime is 12563501. The next prime is 12563539. The reversal of 12563535 is 53536521.

It is not a de Polignac number, because 12563535 - 2¹⁸ = 12301391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12563539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10764 + ... + 11873.

It is an arithmetic number, because the mean of its divisors is an integer number (1290366).

Almost surely, 2^12563535 is an apocalyptic number.

12563535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12563535 is a deficient number, since it is larger than the sum of its proper divisors (8082321).

12563535 is a wasteful number, since it uses less digits than its factorization.

12563535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22682.

The product of its digits is 13500, while the sum is 30.

The square root of 12563535 is about 3544.5077232248. The cubic root of 12563535 is about 232.4719818243.

The spelling of 12563535 in words is "twelve million, five hundred sixty-three thousand, five hundred thirty-five".