11457211 has 4 divisors (see below), whose sum is σ = 11464992. Its totient is φ = 11449432.

The previous prime is 11457181. The next prime is 11457223. The reversal of 11457211 is 11275411.

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: 11275411 = 7 ⋅1610773.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11457211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11457241) 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, 931 + ... + 4876.

It is an arithmetic number, because the mean of its divisors is an integer number (2866248).

Almost surely, 2^11457211 is an apocalyptic number.

11457211 is a deficient number, since it is larger than the sum of its proper divisors (7781).

11457211 is an equidigital number, since it uses as much as digits as its factorization.

11457211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7780.

The product of its digits is 280, while the sum is 22.

The square root of 11457211 is about 3384.8502182519. The cubic root of 11457211 is about 225.4375748004.

The spelling of 11457211 in words is "eleven million, four hundred fifty-seven thousand, two hundred eleven".