915223 has 2 divisors, whose sum is σ = 915224. Its totient is φ = 915222.

The previous prime is 915221. The next prime is 915247. The reversal of 915223 is 322519.

It is a weak prime.

It is an emirp because it is prime and its reverse (322519) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 915223 - 2¹ = 915221 is a prime.

Together with 915221, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 915194 and 915203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (915221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 457611 + 457612.

It is an arithmetic number, because the mean of its divisors is an integer number (457612).

2⁹¹⁵²²³ is an apocalyptic number.

915223 is a deficient number, since it is larger than the sum of its proper divisors (1).

915223 is an equidigital number, since it uses as much as digits as its factorization.

915223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 22.

The square root of 915223 is about 956.6728803515. The cubic root of 915223 is about 97.0902550320.

Subtracting from 915223 its reverse (322519), we obtain a cube (592704 = 84³).

The spelling of 915223 in words is "nine hundred fifteen thousand, two hundred twenty-three".