85259057 has 4 divisors (see below), whose sum is σ = 91817460. Its totient is φ = 78700656.

The previous prime is 85259047. The next prime is 85259059. The reversal of 85259057 is 75095258.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27133681 + 58125376 = 5209^2 + 7624^2 .

It is a cyclic number.

It is not a de Polignac number, because 85259057 - 2⁶ = 85258993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85259059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3279182 + ... + 3279207.

It is an arithmetic number, because the mean of its divisors is an integer number (22954365).

Almost surely, 2^85259057 is an apocalyptic number.

It is an amenable number.

85259057 is a deficient number, since it is larger than the sum of its proper divisors (6558403).

85259057 is a wasteful number, since it uses less digits than its factorization.

85259057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6558402.

The product of its (nonzero) digits is 126000, while the sum is 41.

The square root of 85259057 is about 9233.5831073316. The cubic root of 85259057 is about 440.1291924348.

The spelling of 85259057 in words is "eighty-five million, two hundred fifty-nine thousand, fifty-seven".