2210491 has 4 divisors (see below), whose sum is σ = 2270272. Its totient is φ = 2150712.

The previous prime is 2210477. The next prime is 2210497. The reversal of 2210491 is 1940122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1940122 = 2 ⋅970061.

It is a cyclic number.

It is not a de Polignac number, because 2210491 - 2⁹ = 2209979 is a prime.

It is a super-3 number, since 3×2210491³ = 32403170633356202313, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2210497) 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 3 ways as a sum of consecutive naturals, for example, 29835 + ... + 29908.

It is an arithmetic number, because the mean of its divisors is an integer number (567568).

2^2210491 is an apocalyptic number.

2210491 is a deficient number, since it is larger than the sum of its proper divisors (59781).

2210491 is an equidigital number, since it uses as much as digits as its factorization.

2210491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59780.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 2210491 is about 1486.7720067314. The cubic root of 2210491 is about 130.2655518607.

It can be divided in two parts, 2210 and 491, that added together give a triangular number (2701 = T₇₃).

The spelling of 2210491 in words is "two million, two hundred ten thousand, four hundred ninety-one".