2158223 has 2 divisors, whose sum is σ = 2158224. Its totient is φ = 2158222.

The previous prime is 2158183. The next prime is 2158231. The reversal of 2158223 is 3228512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2158223 - 2¹² = 2154127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2158423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079111 + 1079112.

It is an arithmetic number, because the mean of its divisors is an integer number (1079112).

2^2158223 is an apocalyptic number.

2158223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2158223 is an equidigital number, since it uses as much as digits as its factorization.

2158223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 23.

The square root of 2158223 is about 1469.0891736038. The cubic root of 2158223 is about 129.2306232465.

The spelling of 2158223 in words is "two million, one hundred fifty-eight thousand, two hundred twenty-three".