85583213 has 4 divisors (see below), whose sum is σ = 85633788. Its totient is φ = 85532640.

The previous prime is 85583189. The next prime is 85583221. The reversal of 85583213 is 31238558.

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 28761769 + 56821444 = 5363^2 + 7538^2 .

It is a cyclic number.

It is not a de Polignac number, because 85583213 - 2⁸ = 85582957 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 (85583233) 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, 22658 + ... + 26163.

It is an arithmetic number, because the mean of its divisors is an integer number (21408447).

Almost surely, 2^85583213 is an apocalyptic number.

It is an amenable number.

85583213 is a deficient number, since it is larger than the sum of its proper divisors (50575).

85583213 is a wasteful number, since it uses less digits than its factorization.

85583213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50574.

The product of its digits is 28800, while the sum is 35.

The square root of 85583213 is about 9251.1195538702. The cubic root of 85583213 is about 440.6862792428.

The spelling of 85583213 in words is "eighty-five million, five hundred eighty-three thousand, two hundred thirteen".