2211493 has 2 divisors, whose sum is σ = 2211494. Its totient is φ = 2211492.

The previous prime is 2211481. The next prime is 2211541. The reversal of 2211493 is 3941122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2211169 + 324 = 1487^2 + 18^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211493 - 2¹³ = 2203301 is a prime.

2211493 is a lucky number.

It is equal to p₁₆₃₄₇₁ and since 2211493 and 163471 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105746 + 1105747.

It is an arithmetic number, because the mean of its divisors is an integer number (1105747).

2^2211493 is an apocalyptic number.

It is an amenable number.

2211493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211493 is an equidigital number, since it uses as much as digits as its factorization.

2211493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 22.

The square root of 2211493 is about 1487.1089401923. The cubic root of 2211493 is about 130.2852317064.

It can be divided in two parts, 2211 and 493, that added together give a square (2704 = 52²).

The spelling of 2211493 in words is "two million, two hundred eleven thousand, four hundred ninety-three".