12563137 has 2 divisors, whose sum is σ = 12563138. Its totient is φ = 12563136.

The previous prime is 12563113. The next prime is 12563141. The reversal of 12563137 is 73136521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12383361 + 179776 = 3519^2 + 424^2 .

It is a cyclic number.

It is not a de Polignac number, because 12563137 - 2²³ = 4174529 is a prime.

It is a super-2 number, since 2×12563137² = 315664822561538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12563167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6281568 + 6281569.

It is an arithmetic number, because the mean of its divisors is an integer number (6281569).

Almost surely, 2^12563137 is an apocalyptic number.

It is an amenable number.

12563137 is a deficient number, since it is larger than the sum of its proper divisors (1).

12563137 is an equidigital number, since it uses as much as digits as its factorization.

12563137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 28.

The square root of 12563137 is about 3544.4515795818. The cubic root of 12563137 is about 232.4695269731.

Adding to 12563137 its reverse (73136521), we get a palindrome (85699658).

The spelling of 12563137 in words is "twelve million, five hundred sixty-three thousand, one hundred thirty-seven".