11561219 has 2 divisors, whose sum is σ = 11561220. Its totient is φ = 11561218.

The previous prime is 11561213. The next prime is 11561237. The reversal of 11561219 is 91216511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11561219 - 2⁸ = 11560963 is a prime.

It is a super-2 number, since 2×11561219² = 267323569531922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11561213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5780609 + 5780610.

It is an arithmetic number, because the mean of its divisors is an integer number (5780610).

Almost surely, 2^11561219 is an apocalyptic number.

11561219 is a deficient number, since it is larger than the sum of its proper divisors (1).

11561219 is an equidigital number, since it uses as much as digits as its factorization.

11561219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 26.

The square root of 11561219 is about 3400.1792599803. The cubic root of 11561219 is about 226.1176913307.

The spelling of 11561219 in words is "eleven million, five hundred sixty-one thousand, two hundred nineteen".