85715243 has 2 divisors, whose sum is σ = 85715244. Its totient is φ = 85715242.

The previous prime is 85715219. The next prime is 85715269. The reversal of 85715243 is 34251758.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85715243 - 2¹⁴ = 85698859 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (85715293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42857621 + 42857622.

It is an arithmetic number, because the mean of its divisors is an integer number (42857622).

Almost surely, 2^85715243 is an apocalyptic number.

85715243 is a deficient number, since it is larger than the sum of its proper divisors (1).

85715243 is an equidigital number, since it uses as much as digits as its factorization.

85715243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 35.

The square root of 85715243 is about 9258.2526969186. The cubic root of 85715243 is about 440.9127797164.

It can be divided in two parts, 85715 and 243, that added together give a palindrome (85958).

The spelling of 85715243 in words is "eighty-five million, seven hundred fifteen thousand, two hundred forty-three".