12506541 has 16 divisors (see below), whose sum is σ = 17634240. Its totient is φ = 7862400.

The previous prime is 12506537. The next prime is 12506561. The reversal of 12506541 is 14560521.

It is not a de Polignac number, because 12506541 - 2² = 12506537 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12506561) 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, 17491 + ... + 18191.

It is an arithmetic number, because the mean of its divisors is an integer number (1102140).

Almost surely, 2^12506541 is an apocalyptic number.

It is an amenable number.

12506541 is a deficient number, since it is larger than the sum of its proper divisors (5127699).

12506541 is a wasteful number, since it uses less digits than its factorization.

12506541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 12506541 is about 3536.4588220422. The cubic root of 12506541 is about 232.1199154652.

The spelling of 12506541 in words is "twelve million, five hundred six thousand, five hundred forty-one".