2224861 has 2 divisors, whose sum is σ = 2224862. Its totient is φ = 2224860.

The previous prime is 2224837. The next prime is 2224867. The reversal of 2224861 is 1684222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2220100 + 4761 = 1490^2 + 69^2 .

It is a cyclic number.

It is not a de Polignac number, because 2224861 - 2¹⁵ = 2192093 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2224867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1112430 + 1112431.

It is an arithmetic number, because the mean of its divisors is an integer number (1112431).

2^2224861 is an apocalyptic number.

It is an amenable number.

2224861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2224861 is an equidigital number, since it uses as much as digits as its factorization.

2224861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 25.

The square root of 2224861 is about 1491.5967953841. The cubic root of 2224861 is about 130.5472199363.

It can be divided in two parts, 22248 and 61, that multiplied together give a triangular number (1357128 = T₁₆₄₇).

The spelling of 2224861 in words is "two million, two hundred twenty-four thousand, eight hundred sixty-one".