85499243 has 2 divisors, whose sum is σ = 85499244. Its totient is φ = 85499242.

The previous prime is 85499237. The next prime is 85499261. The reversal of 85499243 is 34299458.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85499243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85499194 and 85499203.

It is not a weakly prime, because it can be changed into another prime (85499263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42749621 + 42749622.

It is an arithmetic number, because the mean of its divisors is an integer number (42749622).

Almost surely, 2^85499243 is an apocalyptic number.

85499243 is a deficient number, since it is larger than the sum of its proper divisors (1).

85499243 is an equidigital number, since it uses as much as digits as its factorization.

85499243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 44.

The square root of 85499243 is about 9246.5800704909. The cubic root of 85499243 is about 440.5421055804.

The spelling of 85499243 in words is "eighty-five million, four hundred ninety-nine thousand, two hundred forty-three".