12530811 has 16 divisors (see below), whose sum is σ = 17192448. Its totient is φ = 8114400.

The previous prime is 12530807. The next prime is 12530821. The reversal of 12530811 is 11803521.

12530811 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12530811 - 2² = 12530807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12530801) 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, 25276 + ... + 25766.

It is an arithmetic number, because the mean of its divisors is an integer number (1074528).

Almost surely, 2^12530811 is an apocalyptic number.

12530811 is a deficient number, since it is larger than the sum of its proper divisors (4661637).

12530811 is a wasteful number, since it uses less digits than its factorization.

12530811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 12530811 is about 3539.8885575679. Note that the first 3 decimals coincide. The cubic root of 12530811 is about 232.2699678829.

The spelling of 12530811 in words is "twelve million, five hundred thirty thousand, eight hundred eleven".