2270921 has 2 divisors, whose sum is σ = 2270922. Its totient is φ = 2270920.

The previous prime is 2270897. The next prime is 2270929. The reversal of 2270921 is 1290722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1729225 + 541696 = 1315^2 + 736^2 .

It is a cyclic number.

It is not a de Polignac number, because 2270921 - 2¹⁸ = 2008777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2270929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1135460 + 1135461.

It is an arithmetic number, because the mean of its divisors is an integer number (1135461).

2^2270921 is an apocalyptic number.

It is an amenable number.

2270921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2270921 is an equidigital number, since it uses as much as digits as its factorization.

2270921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 2270921 is about 1506.9575309212. The cubic root of 2270921 is about 131.4419546525.

The spelling of 2270921 in words is "two million, two hundred seventy thousand, nine hundred twenty-one".