11562409 has 2 divisors, whose sum is σ = 11562410. Its totient is φ = 11562408.

The previous prime is 11562403. The next prime is 11562413. The reversal of 11562409 is 90426511.

11562409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11202409 + 360000 = 3347^2 + 600^2 .

It is a cyclic number.

It is not a de Polignac number, because 11562409 - 2³ = 11562401 is a prime.

It is not a weakly prime, because it can be changed into another prime (11562401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5781204 + 5781205.

It is an arithmetic number, because the mean of its divisors is an integer number (5781205).

Almost surely, 2^11562409 is an apocalyptic number.

It is an amenable number.

11562409 is a deficient number, since it is larger than the sum of its proper divisors (1).

11562409 is an equidigital number, since it uses as much as digits as its factorization.

11562409 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 11562409 is about 3400.3542462514. The cubic root of 11562409 is about 226.1254491868.

The spelling of 11562409 in words is "eleven million, five hundred sixty-two thousand, four hundred nine".