168523 has 2 divisors, whose sum is σ = 168524. Its totient is φ = 168522.

The previous prime is 168499. The next prime is 168527. The reversal of 168523 is 325861.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (325861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168523 - 2⁵ = 168491 is a prime.

It is not a weakly prime, because it can be changed into another prime (168527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84261 + 84262.

It is an arithmetic number, because the mean of its divisors is an integer number (84262).

2¹⁶⁸⁵²³ is an apocalyptic number.

168523 is a deficient number, since it is larger than the sum of its proper divisors (1).

168523 is an equidigital number, since it uses as much as digits as its factorization.

168523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

The square root of 168523 is about 410.5155295479. The cubic root of 168523 is about 55.2356828378.

The spelling of 168523 in words is "one hundred sixty-eight thousand, five hundred twenty-three".