12315577 has 2 divisors, whose sum is σ = 12315578. Its totient is φ = 12315576.

The previous prime is 12315559. The next prime is 12315581. The reversal of 12315577 is 77551321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10310521 + 2005056 = 3211^2 + 1416^2 .

It is a cyclic number.

It is not a de Polignac number, because 12315577 - 2⁷ = 12315449 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12315077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6157788 + 6157789.

It is an arithmetic number, because the mean of its divisors is an integer number (6157789).

Almost surely, 2^12315577 is an apocalyptic number.

It is an amenable number.

12315577 is a deficient number, since it is larger than the sum of its proper divisors (1).

12315577 is an equidigital number, since it uses as much as digits as its factorization.

12315577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7350, while the sum is 31.

The square root of 12315577 is about 3509.3556388602. The cubic root of 12315577 is about 230.9324277785.

Adding to 12315577 its reverse (77551321), we get a palindrome (89866898).

The spelling of 12315577 in words is "twelve million, three hundred fifteen thousand, five hundred seventy-seven".