85257570 has 32 divisors (see below), whose sum is σ = 205660800. Its totient is φ = 22619520.

The previous prime is 85257569. The next prime is 85257589. The reversal of 85257570 is 7575258.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1171 + ... + 13110.

It is an arithmetic number, because the mean of its divisors is an integer number (6426900).

Almost surely, 2^85257570 is an apocalyptic number.

85257570 is an abundant number, since it is smaller than the sum of its proper divisors (120403230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85257570 is a wasteful number, since it uses less digits than its factorization.

85257570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14490.

The product of its (nonzero) digits is 98000, while the sum is 39.

The square root of 85257570 is about 9233.5025856930. The cubic root of 85257570 is about 440.1266336611.

The spelling of 85257570 in words is "eighty-five million, two hundred fifty-seven thousand, five hundred seventy".