85321761 has 32 divisors (see below), whose sum is σ = 140067840. Its totient is φ = 45105984.

The previous prime is 85321739. The next prime is 85321777. The reversal of 85321761 is 16712358.

It is not a de Polignac number, because 85321761 - 2¹⁴ = 85305377 is a prime.

It is a super-2 number, since 2×85321761² = 14559605800282242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85321781) 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 31 ways as a sum of consecutive naturals, for example, 14671 + ... + 19643.

It is an arithmetic number, because the mean of its divisors is an integer number (4377120).

Almost surely, 2^85321761 is an apocalyptic number.

It is an amenable number.

85321761 is a deficient number, since it is larger than the sum of its proper divisors (54746079).

85321761 is a wasteful number, since it uses less digits than its factorization.

85321761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5045.

The product of its digits is 10080, while the sum is 33.

The square root of 85321761 is about 9236.9779148810. The cubic root of 85321761 is about 440.2370640556.

The spelling of 85321761 in words is "eighty-five million, three hundred twenty-one thousand, seven hundred sixty-one".