85028291 has 2 divisors, whose sum is σ = 85028292. Its totient is φ = 85028290.

The previous prime is 85028239. The next prime is 85028297. The reversal of 85028291 is 19282058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85028291 - 2⁶ = 85028227 is a prime.

It is not a weakly prime, because it can be changed into another prime (85028297) 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, 42514145 + 42514146.

It is an arithmetic number, because the mean of its divisors is an integer number (42514146).

Almost surely, 2^85028291 is an apocalyptic number.

85028291 is a deficient number, since it is larger than the sum of its proper divisors (1).

85028291 is an equidigital number, since it uses as much as digits as its factorization.

85028291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 85028291 is about 9221.0786245428. The cubic root of 85028291 is about 439.7317424747.

The spelling of 85028291 in words is "eighty-five million, twenty-eight thousand, two hundred ninety-one".