12539061 has 6 divisors (see below), whose sum is σ = 18111990. Its totient is φ = 8359368.

The previous prime is 12539057. The next prime is 12539113. The reversal of 12539061 is 16093521.

It can be written as a sum of positive squares in only one way, i.e., 6922161 + 5616900 = 2631^2 + 2370^2 .

It is not a de Polignac number, because 12539061 - 2² = 12539057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12539011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 696606 + ... + 696623.

It is an arithmetic number, because the mean of its divisors is an integer number (3018665).

Almost surely, 2^12539061 is an apocalyptic number.

It is an amenable number.

12539061 is a deficient number, since it is larger than the sum of its proper divisors (5572929).

12539061 is a wasteful number, since it uses less digits than its factorization.

12539061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393235 (or 1393232 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 12539061 is about 3541.0536567525. The cubic root of 12539061 is about 232.3209304491.

The spelling of 12539061 in words is "twelve million, five hundred thirty-nine thousand, sixty-one".