85472321 has 16 divisors (see below), whose sum is σ = 95074560. Its totient is φ = 76191120.

The previous prime is 85472293. The next prime is 85472323. The reversal of 85472321 is 12327458.

It is a cyclic number.

It is not a de Polignac number, because 85472321 - 2²² = 81278017 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85472323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163166 + ... + 163688.

It is an arithmetic number, because the mean of its divisors is an integer number (5942160).

Almost surely, 2^85472321 is an apocalyptic number.

It is an amenable number.

85472321 is a deficient number, since it is larger than the sum of its proper divisors (9602239).

85472321 is a wasteful number, since it uses less digits than its factorization.

85472321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796.

The product of its digits is 13440, while the sum is 32.

The square root of 85472321 is about 9245.1241743959. The cubic root of 85472321 is about 440.4958614297.

Adding to 85472321 its reverse (12327458), we get a palindrome (97799779).

The spelling of 85472321 in words is "eighty-five million, four hundred seventy-two thousand, three hundred twenty-one".