12299557 has 2 divisors, whose sum is σ = 12299558. Its totient is φ = 12299556.

The previous prime is 12299531. The next prime is 12299561. The reversal of 12299557 is 75599221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6687396 + 5612161 = 2586^2 + 2369^2 .

It is a cyclic number.

It is not a de Polignac number, because 12299557 - 2¹⁵ = 12266789 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12299527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6149778 + 6149779.

It is an arithmetic number, because the mean of its divisors is an integer number (6149779).

Almost surely, 2^12299557 is an apocalyptic number.

It is an amenable number.

12299557 is a deficient number, since it is larger than the sum of its proper divisors (1).

12299557 is an equidigital number, since it uses as much as digits as its factorization.

12299557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56700, while the sum is 40.

The square root of 12299557 is about 3507.0724258276. The cubic root of 12299557 is about 230.8322526707.

The spelling of 12299557 in words is "twelve million, two hundred ninety-nine thousand, five hundred fifty-seven".