11815361 has 2 divisors, whose sum is σ = 11815362. Its totient is φ = 11815360.

The previous prime is 11815351. The next prime is 11815369. The reversal of 11815361 is 16351811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9394225 + 2421136 = 3065^2 + 1556^2 .

It is a cyclic number.

It is not a de Polignac number, because 11815361 - 2²² = 7621057 is a prime.

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 11815361.

It is not a weakly prime, because it can be changed into another prime (11815369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5907680 + 5907681.

It is an arithmetic number, because the mean of its divisors is an integer number (5907681).

Almost surely, 2^11815361 is an apocalyptic number.

It is an amenable number.

11815361 is a deficient number, since it is larger than the sum of its proper divisors (1).

11815361 is an equidigital number, since it uses as much as digits as its factorization.

11815361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 26.

The square root of 11815361 is about 3437.3479602740. The cubic root of 11815361 is about 227.7625580330.

The spelling of 11815361 in words is "eleven million, eight hundred fifteen thousand, three hundred sixty-one".