12626261 has 2 divisors, whose sum is σ = 12626262. Its totient is φ = 12626260.

The previous prime is 12626227. The next prime is 12626267. The reversal of 12626261 is 16262621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10432900 + 2193361 = 3230^2 + 1481^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12626261 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12626261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12626267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6313130 + 6313131.

It is an arithmetic number, because the mean of its divisors is an integer number (6313131).

Almost surely, 2^12626261 is an apocalyptic number.

It is an amenable number.

12626261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12626261 is an equidigital number, since it uses as much as digits as its factorization.

12626261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

The square root of 12626261 is about 3553.3450437581. The cubic root of 12626261 is about 232.8582275928.

Adding to 12626261 its reverse (16262621), we get a palindrome (28888882).

It can be divided in two parts, 1 and 2626261, that added together give a palindrome (2626262).

The spelling of 12626261 in words is "twelve million, six hundred twenty-six thousand, two hundred sixty-one".