11455291 has 4 divisors (see below), whose sum is σ = 11462472. Its totient is φ = 11448112.

The previous prime is 11455289. The next prime is 11455303. The reversal of 11455291 is 19255411.

11455291 is a nontrivial binomial coefficient, being equal to C(4787, 2).

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 19255411 = 7 ⋅2750773.

It is not a de Polignac number, because 11455291 - 2¹ = 11455289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11455201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 4786.

It is an arithmetic number, because the mean of its divisors is an integer number (2865618).

Almost surely, 2^11455291 is an apocalyptic number.

11455291 is the 4786-th triangular number.

11455291 is the 1596-th centered nonagonal number.

11455291 is a deficient number, since it is larger than the sum of its proper divisors (7181).

11455291 is an equidigital number, since it uses as much as digits as its factorization.

11455291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7180.

The product of its digits is 1800, while the sum is 28.

The square root of 11455291 is about 3384.5665896832. The cubic root of 11455291 is about 225.4249811502.

The spelling of 11455291 in words is "eleven million, four hundred fifty-five thousand, two hundred ninety-one".