85470520 has 32 divisors (see below), whose sum is σ = 193097520. Its totient is φ = 34048000.

The previous prime is 85470499. The next prime is 85470521. The reversal of 85470520 is 2507458.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85470521) 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 7 ways as a sum of consecutive naturals, for example, 5784 + ... + 14296.

Almost surely, 2^85470520 is an apocalyptic number.

It is an amenable number.

85470520 is an abundant number, since it is smaller than the sum of its proper divisors (107627000).

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

85470520 is a wasteful number, since it uses less digits than its factorization.

85470520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8775 (or 8771 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 85470520 is about 9245.0267711889. The cubic root of 85470520 is about 440.4927674900.

Adding to 85470520 its reverse (2507458), we get a palindrome (87977978).

The spelling of 85470520 in words is "eighty-five million, four hundred seventy thousand, five hundred twenty".