12506503 has 8 divisors (see below), whose sum is σ = 13737600. Its totient is φ = 11332728.

The previous prime is 12506497. The next prime is 12506519. The reversal of 12506503 is 30560521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12506503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12506563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13873 + ... + 14746.

It is an arithmetic number, because the mean of its divisors is an integer number (1717200).

Almost surely, 2^12506503 is an apocalyptic number.

12506503 is a deficient number, since it is larger than the sum of its proper divisors (1231097).

12506503 is a wasteful number, since it uses less digits than its factorization.

12506503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28661.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 12506503 is about 3536.4534494321. The cubic root of 12506503 is about 232.1196803731.

The spelling of 12506503 in words is "twelve million, five hundred six thousand, five hundred three".