85285913 has 2 divisors, whose sum is σ = 85285914. Its totient is φ = 85285912.

The previous prime is 85285901. The next prime is 85285939. The reversal of 85285913 is 31958258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62599744 + 22686169 = 7912^2 + 4763^2 .

It is a cyclic number.

It is not a de Polignac number, because 85285913 - 2⁸ = 85285657 is a prime.

It is not a weakly prime, because it can be changed into another prime (85281913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42642956 + 42642957.

It is an arithmetic number, because the mean of its divisors is an integer number (42642957).

Almost surely, 2^85285913 is an apocalyptic number.

It is an amenable number.

85285913 is a deficient number, since it is larger than the sum of its proper divisors (1).

85285913 is an equidigital number, since it uses as much as digits as its factorization.

85285913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 41.

The square root of 85285913 is about 9235.0372495188. The cubic root of 85285913 is about 440.1754001111.

It can be divided in two parts, 8528 and 5913, that added together give a palindrome (14441).

The spelling of 85285913 in words is "eighty-five million, two hundred eighty-five thousand, nine hundred thirteen".