85397504 has 26 divisors (see below), whose sum is σ = 170782350. Its totient is φ = 42696704.

The previous prime is 85397503. The next prime is 85397509. The reversal of 85397504 is 40579358.

It can be written as a sum of positive squares in only one way, i.e., 83759104 + 1638400 = 9152^2 + 1280^2 .

It is not an unprimeable number, because it can be changed into a prime (85397503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6329 + ... + 14520.

Almost surely, 2^85397504 is an apocalyptic number.

It is an amenable number.

85397504 is a deficient number, since it is larger than the sum of its proper divisors (85384846).

85397504 is an equidigital number, since it uses as much as digits as its factorization.

85397504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20873 (or 20851 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 85397504 is about 9241.0769935111. The cubic root of 85397504 is about 440.3672966141.

The spelling of 85397504 in words is "eighty-five million, three hundred ninety-seven thousand, five hundred four".