12401569 has 2 divisors, whose sum is σ = 12401570. Its totient is φ = 12401568.

The previous prime is 12401563. The next prime is 12401573. The reversal of 12401569 is 96510421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10112400 + 2289169 = 3180^2 + 1513^2 .

It is a cyclic number.

It is not a de Polignac number, because 12401569 - 2⁵ = 12401537 is a prime.

It is a super-2 number, since 2×12401569² = 307597827323522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12401563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200784 + 6200785.

It is an arithmetic number, because the mean of its divisors is an integer number (6200785).

Almost surely, 2^12401569 is an apocalyptic number.

It is an amenable number.

12401569 is a deficient number, since it is larger than the sum of its proper divisors (1).

12401569 is an equidigital number, since it uses as much as digits as its factorization.

12401569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 12401569 is about 3521.5861483144. The cubic root of 12401569 is about 231.4686673802.

It can be divided in two parts, 1240 and 1569, that added together give a square (2809 = 53²).

The spelling of 12401569 in words is "twelve million, four hundred one thousand, five hundred sixty-nine".