85098221 has 8 divisors (see below), whose sum is σ = 92261400. Its totient is φ = 78023232.

The previous prime is 85098203. The next prime is 85098227. The reversal of 85098221 is 12289058.

It can be written as a sum of positive squares in 4 ways, for example, as 8185321 + 76912900 = 2861^2 + 8770^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85098221 - 2¹⁴ = 85081837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85098227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20030 + ... + 23903.

It is an arithmetic number, because the mean of its divisors is an integer number (11532675).

Almost surely, 2^85098221 is an apocalyptic number.

It is an amenable number.

85098221 is a deficient number, since it is larger than the sum of its proper divisors (7163179).

85098221 is a wasteful number, since it uses less digits than its factorization.

85098221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44095.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 85098221 is about 9224.8697009768. The cubic root of 85098221 is about 439.8522592823.

The spelling of 85098221 in words is "eighty-five million, ninety-eight thousand, two hundred twenty-one".