85653331 has 2 divisors, whose sum is σ = 85653332. Its totient is φ = 85653330.

The previous prime is 85653299. The next prime is 85653397. The reversal of 85653331 is 13335658.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85653331 - 2⁵ = 85653299 is a prime.

It is a super-2 number, since 2×85653331² = 14672986222791122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85653431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42826665 + 42826666.

It is an arithmetic number, because the mean of its divisors is an integer number (42826666).

Almost surely, 2^85653331 is an apocalyptic number.

85653331 is a deficient number, since it is larger than the sum of its proper divisors (1).

85653331 is an equidigital number, since it uses as much as digits as its factorization.

85653331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 34.

The square root of 85653331 is about 9254.9084814492. The cubic root of 85653331 is about 440.8065972527.

Adding to 85653331 its reverse (13335658), we get a palindrome (98988989).

The spelling of 85653331 in words is "eighty-five million, six hundred fifty-three thousand, three hundred thirty-one".