12258761 has 2 divisors, whose sum is σ = 12258762. Its totient is φ = 12258760.

The previous prime is 12258749. The next prime is 12258767. The reversal of 12258761 is 16785221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11526025 + 732736 = 3395^2 + 856^2 .

It is an emirp because it is prime and its reverse (16785221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12258761 - 2¹⁰ = 12257737 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (12258767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6129380 + 6129381.

It is an arithmetic number, because the mean of its divisors is an integer number (6129381).

Almost surely, 2^12258761 is an apocalyptic number.

It is an amenable number.

12258761 is a deficient number, since it is larger than the sum of its proper divisors (1).

12258761 is an equidigital number, since it uses as much as digits as its factorization.

12258761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 32.

The square root of 12258761 is about 3501.2513477327. The cubic root of 12258761 is about 230.5767566532.

The spelling of 12258761 in words is "twelve million, two hundred fifty-eight thousand, seven hundred sixty-one".