11772569 has 2 divisors, whose sum is σ = 11772570. Its totient is φ = 11772568.

The previous prime is 11772559. The next prime is 11772587. The reversal of 11772569 is 96527711.

11772569 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9684544 + 2088025 = 3112^2 + 1445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11772569 is a prime.

It is a super-2 number, since 2×11772569² = 277186761719522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11772539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5886284 + 5886285.

It is an arithmetic number, because the mean of its divisors is an integer number (5886285).

Almost surely, 2^11772569 is an apocalyptic number.

It is an amenable number.

11772569 is a deficient number, since it is larger than the sum of its proper divisors (1).

11772569 is an equidigital number, since it uses as much as digits as its factorization.

11772569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26460, while the sum is 38.

The square root of 11772569 is about 3431.1177479066. The cubic root of 11772569 is about 227.4872608895.

The spelling of 11772569 in words is "eleven million, seven hundred seventy-two thousand, five hundred sixty-nine".