12437261 has 2 divisors, whose sum is σ = 12437262. Its totient is φ = 12437260.

The previous prime is 12437239. The next prime is 12437297. The reversal of 12437261 is 16273421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7896100 + 4541161 = 2810^2 + 2131^2 .

It is a cyclic number.

It is not a de Polignac number, because 12437261 - 2¹⁸ = 12175117 is a prime.

It is a super-2 number, since 2×12437261² = 309370922364242, which contains 22 as substring.

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 12437261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12437221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6218630 + 6218631.

It is an arithmetic number, because the mean of its divisors is an integer number (6218631).

Almost surely, 2^12437261 is an apocalyptic number.

It is an amenable number.

12437261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12437261 is an equidigital number, since it uses as much as digits as its factorization.

12437261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 12437261 is about 3526.6501102321. The cubic root of 12437261 is about 231.6905120691.

The spelling of 12437261 in words is "twelve million, four hundred thirty-seven thousand, two hundred sixty-one".