11561199 has 8 divisors (see below), whose sum is σ = 16600752. Its totient is φ = 7114560.

The previous prime is 11561197. The next prime is 11561213. The reversal of 11561199 is 99116511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11561199 - 2¹ = 11561197 is a prime.

It is a super-2 number, since 2×11561199² = 267322644635202, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11561197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148182 + ... + 148259.

It is an arithmetic number, because the mean of its divisors is an integer number (2075094).

Almost surely, 2^11561199 is an apocalyptic number.

11561199 is a deficient number, since it is larger than the sum of its proper divisors (5039553).

11561199 is a wasteful number, since it uses less digits than its factorization.

11561199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296457.

The product of its digits is 2430, while the sum is 33.

The square root of 11561199 is about 3400.1763189576. The cubic root of 11561199 is about 226.1175609420.

The spelling of 11561199 in words is "eleven million, five hundred sixty-one thousand, one hundred ninety-nine".