12563503 has 4 divisors (see below), whose sum is σ = 13224760. Its totient is φ = 11902248.

The previous prime is 12563501. The next prime is 12563539. The reversal of 12563503 is 30536521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12563503 - 2¹ = 12563501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12563501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330600 + ... + 330637.

It is an arithmetic number, because the mean of its divisors is an integer number (3306190).

Almost surely, 2^12563503 is an apocalyptic number.

12563503 is a deficient number, since it is larger than the sum of its proper divisors (661257).

12563503 is an equidigital number, since it uses as much as digits as its factorization.

12563503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661256.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 12563503 is about 3544.5032091959. The cubic root of 12563503 is about 232.4717844513.

The spelling of 12563503 in words is "twelve million, five hundred sixty-three thousand, five hundred three".