85297570 has 32 divisors (see below), whose sum is σ = 161440128. Its totient is φ = 32385408.

The previous prime is 85297559. The next prime is 85297571. The reversal of 85297570 is 7579258.

It is not an unprimeable number, because it can be changed into a prime (85297571) 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 in 15 ways as a sum of consecutive naturals, for example, 30157 + ... + 32863.

It is an arithmetic number, because the mean of its divisors is an integer number (5045004).

Almost surely, 2^85297570 is an apocalyptic number.

85297570 is a deficient number, since it is larger than the sum of its proper divisors (76142558).

85297570 is a wasteful number, since it uses less digits than its factorization.

85297570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2874.

The product of its (nonzero) digits is 176400, while the sum is 43.

The square root of 85297570 is about 9235.6683569734. The cubic root of 85297570 is about 440.1954537976.

The spelling of 85297570 in words is "eighty-five million, two hundred ninety-seven thousand, five hundred seventy".