85113529 has 2 divisors, whose sum is σ = 85113530. Its totient is φ = 85113528.

The previous prime is 85113527. The next prime is 85113533. The reversal of 85113529 is 92531158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84548025 + 565504 = 9195^2 + 752^2 .

It is a cyclic number.

It is not a de Polignac number, because 85113529 - 2¹ = 85113527 is a prime.

Together with 85113527, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 85113494 and 85113503.

It is not a weakly prime, because it can be changed into another prime (85113527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42556764 + 42556765.

It is an arithmetic number, because the mean of its divisors is an integer number (42556765).

Almost surely, 2^85113529 is an apocalyptic number.

It is an amenable number.

85113529 is a deficient number, since it is larger than the sum of its proper divisors (1).

85113529 is an equidigital number, since it uses as much as digits as its factorization.

85113529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 34.

The square root of 85113529 is about 9225.6993772830. The cubic root of 85113529 is about 439.8786321591.

The spelling of 85113529 in words is "eighty-five million, one hundred thirteen thousand, five hundred twenty-nine".