85215301 has 2 divisors, whose sum is σ = 85215302. Its totient is φ = 85215300.

The previous prime is 85215283. The next prime is 85215313. The reversal of 85215301 is 10351258.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77898276 + 7317025 = 8826^2 + 2705^2 .

It is a cyclic number.

It is not a de Polignac number, because 85215301 - 2¹⁵ = 85182533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85215341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42607650 + 42607651.

It is an arithmetic number, because the mean of its divisors is an integer number (42607651).

Almost surely, 2^85215301 is an apocalyptic number.

It is an amenable number.

85215301 is a deficient number, since it is larger than the sum of its proper divisors (1).

85215301 is an equidigital number, since it uses as much as digits as its factorization.

85215301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 85215301 is about 9231.2134088645. The cubic root of 85215301 is about 440.0538863067.

Adding to 85215301 its reverse (10351258), we get a palindrome (95566559).

The spelling of 85215301 in words is "eighty-five million, two hundred fifteen thousand, three hundred one".