85020499 has 2 divisors, whose sum is σ = 85020500. Its totient is φ = 85020498.

The previous prime is 85020491. The next prime is 85020517. The reversal of 85020499 is 99402058.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85020499 - 2³ = 85020491 is a prime.

It is not a weakly prime, because it can be changed into another prime (85020491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42510249 + 42510250.

It is an arithmetic number, because the mean of its divisors is an integer number (42510250).

Almost surely, 2^85020499 is an apocalyptic number.

85020499 is a deficient number, since it is larger than the sum of its proper divisors (1).

85020499 is an equidigital number, since it uses as much as digits as its factorization.

85020499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 85020499 is about 9220.6561046381. The cubic root of 85020499 is about 439.7183097127.

It can be divided in two parts, 8502049 and 9, that added together give a palindrome (8502058).

The spelling of 85020499 in words is "eighty-five million, twenty thousand, four hundred ninety-nine".