2267921 has 2 divisors, whose sum is σ = 2267922. Its totient is φ = 2267920.

The previous prime is 2267917. The next prime is 2267933. The reversal of 2267921 is 1297622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1784896 + 483025 = 1336^2 + 695^2 .

It is a cyclic number.

It is not a de Polignac number, because 2267921 - 2² = 2267917 is a prime.

It is not a weakly prime, because it can be changed into another prime (2267911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1133960 + 1133961.

It is an arithmetic number, because the mean of its divisors is an integer number (1133961).

2^2267921 is an apocalyptic number.

It is an amenable number.

2267921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2267921 is an equidigital number, since it uses as much as digits as its factorization.

2267921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 29.

The square root of 2267921 is about 1505.9618189051. The cubic root of 2267921 is about 131.3840486850.

Subtracting from 2267921 its reverse (1297622), we obtain a cube (970299 = 99³).

The spelling of 2267921 in words is "two million, two hundred sixty-seven thousand, nine hundred twenty-one".