85015583 has 2 divisors, whose sum is σ = 85015584. Its totient is φ = 85015582.

The previous prime is 85015573. The next prime is 85015643. The reversal of 85015583 is 38551058.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85015583 - 2¹⁸ = 84753439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85015523) 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, 42507791 + 42507792.

It is an arithmetic number, because the mean of its divisors is an integer number (42507792).

Almost surely, 2^85015583 is an apocalyptic number.

85015583 is a deficient number, since it is larger than the sum of its proper divisors (1).

85015583 is an equidigital number, since it uses as much as digits as its factorization.

85015583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24000, while the sum is 35.

The square root of 85015583 is about 9220.3895253942. The cubic root of 85015583 is about 439.7098345139.

The spelling of 85015583 in words is "eighty-five million, fifteen thousand, five hundred eighty-three".