85850321 has 4 divisors (see below), whose sum is σ = 85931700. Its totient is φ = 85768944.

The previous prime is 85850311. The next prime is 85850371. The reversal of 85850321 is 12305858.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58140625 + 27709696 = 7625^2 + 5264^2 .

It is a cyclic number.

It is not a de Polignac number, because 85850321 - 2¹⁰ = 85849297 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85850311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39086 + ... + 41223.

It is an arithmetic number, because the mean of its divisors is an integer number (21482925).

Almost surely, 2^85850321 is an apocalyptic number.

It is an amenable number.

85850321 is a deficient number, since it is larger than the sum of its proper divisors (81379).

85850321 is a wasteful number, since it uses less digits than its factorization.

85850321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81378.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 85850321 is about 9265.5448301759. The cubic root of 85850321 is about 441.1442685247.

The spelling of 85850321 in words is "eighty-five million, eight hundred fifty thousand, three hundred twenty-one".