2266921 has 2 divisors, whose sum is σ = 2266922. Its totient is φ = 2266920.

The previous prime is 2266907. The next prime is 2266961. The reversal of 2266921 is 1296622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1354896 + 912025 = 1164^2 + 955^2 .

It is a cyclic number.

It is not a de Polignac number, because 2266921 - 2²¹ = 169769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2266921.

It is not a weakly prime, because it can be changed into another prime (2266961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1133460 + 1133461.

It is an arithmetic number, because the mean of its divisors is an integer number (1133461).

2^2266921 is an apocalyptic number.

It is an amenable number.

2266921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2266921 is an equidigital number, since it uses as much as digits as its factorization.

2266921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 2266921 is about 1505.6297685686. The cubic root of 2266921 is about 131.3647353486.

Subtracting from 2266921 its reverse (1296622), we obtain a cube (970299 = 99³).

The spelling of 2266921 in words is "two million, two hundred sixty-six thousand, nine hundred twenty-one".