85558523 has 2 divisors, whose sum is σ = 85558524. Its totient is φ = 85558522.

The previous prime is 85558511. The next prime is 85558549. The reversal of 85558523 is 32585558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85558523 - 2⁴ = 85558507 is a prime.

It is not a weakly prime, because it can be changed into another prime (85558573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42779261 + 42779262.

It is an arithmetic number, because the mean of its divisors is an integer number (42779262).

Almost surely, 2^85558523 is an apocalyptic number.

85558523 is a deficient number, since it is larger than the sum of its proper divisors (1).

85558523 is an equidigital number, since it uses as much as digits as its factorization.

85558523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240000, while the sum is 41.

The square root of 85558523 is about 9249.7850245289. The cubic root of 85558523 is about 440.6438971357.

The spelling of 85558523 in words is "eighty-five million, five hundred fifty-eight thousand, five hundred twenty-three".