12961583 has 2 divisors, whose sum is σ = 12961584. Its totient is φ = 12961582.

The previous prime is 12961577. The next prime is 12961601. The reversal of 12961583 is 38516921.

It is a weak prime.

It is an emirp because it is prime and its reverse (38516921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12961583 - 2⁴ = 12961567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12961483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6480791 + 6480792.

It is an arithmetic number, because the mean of its divisors is an integer number (6480792).

Almost surely, 2^12961583 is an apocalyptic number.

12961583 is a deficient number, since it is larger than the sum of its proper divisors (1).

12961583 is an equidigital number, since it uses as much as digits as its factorization.

12961583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The square root of 12961583 is about 3600.2198543978. The cubic root of 12961583 is about 234.9016217158.

The spelling of 12961583 in words is "twelve million, nine hundred sixty-one thousand, five hundred eighty-three".