12545906 has 8 divisors (see below), whose sum is σ = 18840540. Its totient is φ = 6265728.

The previous prime is 12545903. The next prime is 12545927. The reversal of 12545906 is 60954521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12538681 + 7225 = 3541^2 + 85^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12545903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1091 + ... + 5126.

Almost surely, 2^12545906 is an apocalyptic number.

12545906 is a deficient number, since it is larger than the sum of its proper divisors (6294634).

12545906 is a wasteful number, since it uses less digits than its factorization.

12545906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7228.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 12545906 is about 3542.0200451155. The cubic root of 12545906 is about 232.3631969711.

The spelling of 12545906 in words is "twelve million, five hundred forty-five thousand, nine hundred six".