85040213 has 2 divisors, whose sum is σ = 85040214. Its totient is φ = 85040212.

The previous prime is 85040173. The next prime is 85040227. The reversal of 85040213 is 31204058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78978769 + 6061444 = 8887^2 + 2462^2 .

It is a cyclic number.

It is not a de Polignac number, because 85040213 - 2¹⁶ = 84974677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85070213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42520106 + 42520107.

It is an arithmetic number, because the mean of its divisors is an integer number (42520107).

Almost surely, 2^85040213 is an apocalyptic number.

It is an amenable number.

85040213 is a deficient number, since it is larger than the sum of its proper divisors (1).

85040213 is an equidigital number, since it uses as much as digits as its factorization.

85040213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 85040213 is about 9221.7250555414. The cubic root of 85040213 is about 439.7522934262.

The spelling of 85040213 in words is "eighty-five million, forty thousand, two hundred thirteen".