85513297 has 2 divisors, whose sum is σ = 85513298. Its totient is φ = 85513296.

The previous prime is 85513289. The next prime is 85513301. The reversal of 85513297 is 79231558.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71978256 + 13535041 = 8484^2 + 3679^2 .

It is a cyclic number.

It is not a de Polignac number, because 85513297 - 2³ = 85513289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85513997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42756648 + 42756649.

It is an arithmetic number, because the mean of its divisors is an integer number (42756649).

Almost surely, 2^85513297 is an apocalyptic number.

It is an amenable number.

85513297 is a deficient number, since it is larger than the sum of its proper divisors (1).

85513297 is an equidigital number, since it uses as much as digits as its factorization.

85513297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 40.

The square root of 85513297 is about 9247.3399959123. The cubic root of 85513297 is about 440.5662424006.

The spelling of 85513297 in words is "eighty-five million, five hundred thirteen thousand, two hundred ninety-seven".