1558223 has 2 divisors, whose sum is σ = 1558224. Its totient is φ = 1558222.

The previous prime is 1558217. The next prime is 1558243. The reversal of 1558223 is 3228551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1558223 - 2²⁰ = 509647 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1558192 and 1558201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1558213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 779111 + 779112.

It is an arithmetic number, because the mean of its divisors is an integer number (779112).

2^1558223 is an apocalyptic number.

1558223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1558223 is an equidigital number, since it uses as much as digits as its factorization.

1558223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2400, while the sum is 26.

The square root of 1558223 is about 1248.2880276603. The cubic root of 1558223 is about 115.9337463518.

The spelling of 1558223 in words is "one million, five hundred fifty-eight thousand, two hundred twenty-three".