12563437 has 2 divisors, whose sum is σ = 12563438. Its totient is φ = 12563436.

The previous prime is 12563417. The next prime is 12563443. The reversal of 12563437 is 73436521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8128201 + 4435236 = 2851^2 + 2106^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12563437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12563399 and 12563408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12563417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6281718 + 6281719.

It is an arithmetic number, because the mean of its divisors is an integer number (6281719).

Almost surely, 2^12563437 is an apocalyptic number.

It is an amenable number.

12563437 is a deficient number, since it is larger than the sum of its proper divisors (1).

12563437 is an equidigital number, since it uses as much as digits as its factorization.

12563437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 31.

The square root of 12563437 is about 3544.4938989932. The cubic root of 12563437 is about 232.4713773683.

Adding to 12563437 its reverse (73436521), we get a palindrome (85999958).

The spelling of 12563437 in words is "twelve million, five hundred sixty-three thousand, four hundred thirty-seven".