12506534 has 4 divisors (see below), whose sum is σ = 18759804. Its totient is φ = 6253266.

The previous prime is 12506519. The next prime is 12506537. The reversal of 12506534 is 43560521.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12506537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3126632 + ... + 3126635.

It is an arithmetic number, because the mean of its divisors is an integer number (4689951).

Almost surely, 2^12506534 is an apocalyptic number.

12506534 is a deficient number, since it is larger than the sum of its proper divisors (6253270).

12506534 is an equidigital number, since it uses as much as digits as its factorization.

12506534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6253269.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 12506534 is about 3536.4578323515. The cubic root of 12506534 is about 232.1198721588.

The spelling of 12506534 in words is "twelve million, five hundred six thousand, five hundred thirty-four".