85004520 has 32 divisors (see below), whose sum is σ = 255013920. Its totient is φ = 22667840.

The previous prime is 85004519. The next prime is 85004567. The reversal of 85004520 is 2540058.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354066 + ... + 354305.

It is an arithmetic number, because the mean of its divisors is an integer number (7969185).

Almost surely, 2^85004520 is an apocalyptic number.

It is an amenable number.

85004520 is an abundant number, since it is smaller than the sum of its proper divisors (170009400).

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

85004520 is a wasteful number, since it uses less digits than its factorization.

85004520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708385 (or 708381 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 85004520 is about 9219.7895854515. The cubic root of 85004520 is about 439.6907606738.

Adding to 85004520 its reverse (2540058), we get a palindrome (87544578).

The spelling of 85004520 in words is "eighty-five million, four thousand, five hundred twenty".