85536257 has 4 divisors (see below), whose sum is σ = 85554756. Its totient is φ = 85517760.

The previous prime is 85536251. The next prime is 85536289. The reversal of 85536257 is 75263558.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 58920976 + 26615281 = 7676^2 + 5159^2 .

It is a cyclic number.

It is not a de Polignac number, because 85536257 - 2¹⁴ = 85519873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85536251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4493 + ... + 13829.

It is an arithmetic number, because the mean of its divisors is an integer number (21388689).

Almost surely, 2^85536257 is an apocalyptic number.

It is an amenable number.

85536257 is a deficient number, since it is larger than the sum of its proper divisors (18499).

85536257 is an equidigital number, since it uses as much as digits as its factorization.

85536257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18498.

The product of its digits is 252000, while the sum is 41.

The square root of 85536257 is about 9248.5813506721. The cubic root of 85536257 is about 440.6056690009.

The spelling of 85536257 in words is "eighty-five million, five hundred thirty-six thousand, two hundred fifty-seven".