11172291 has 8 divisors (see below), whose sum is σ = 16042320. Its totient is φ = 6875232.

The previous prime is 11172289. The next prime is 11172311. The reversal of 11172291 is 19227111.

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

It is not a de Polignac number, because 11172291 - 2¹ = 11172289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11172251) 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, 143196 + ... + 143273.

It is an arithmetic number, because the mean of its divisors is an integer number (2005290).

Almost surely, 2^11172291 is an apocalyptic number.

11172291 is a deficient number, since it is larger than the sum of its proper divisors (4870029).

11172291 is a wasteful number, since it uses less digits than its factorization.

11172291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286485.

The product of its digits is 252, while the sum is 24.

The square root of 11172291 is about 3342.4977187726. The cubic root of 11172291 is about 223.5531256181.

The spelling of 11172291 in words is "eleven million, one hundred seventy-two thousand, two hundred ninety-one".