12570561 has 12 divisors (see below), whose sum is σ = 18338580. Its totient is φ = 8296800.

The previous prime is 12570553. The next prime is 12570619. The reversal of 12570561 is 16507521.

It can be written as a sum of positive squares in 2 ways, for example, as 7535025 + 5035536 = 2745^2 + 2244^2 .

It is not a de Polignac number, because 12570561 - 2³ = 12570553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12570541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6006 + ... + 7823.

It is an arithmetic number, because the mean of its divisors is an integer number (1528215).

Almost surely, 2^12570561 is an apocalyptic number.

It is an amenable number.

12570561 is a deficient number, since it is larger than the sum of its proper divisors (5768019).

12570561 is a wasteful number, since it uses less digits than its factorization.

12570561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13936 (or 13933 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 12570561 is about 3545.4986955293. The cubic root of 12570561 is about 232.5153094324.

It can be divided in two parts, 12570 and 561, that added together give a palindrome (13131).

The spelling of 12570561 in words is "twelve million, five hundred seventy thousand, five hundred sixty-one".