85581343 has 4 divisors (see below), whose sum is σ = 86011600. Its totient is φ = 85151088.

The previous prime is 85581323. The next prime is 85581401. The reversal of 85581343 is 34318558.

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

It is a cyclic number.

It is not a de Polignac number, because 85581343 - 2¹³ = 85573151 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 (85581323) 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, 214830 + ... + 215227.

It is an arithmetic number, because the mean of its divisors is an integer number (21502900).

Almost surely, 2^85581343 is an apocalyptic number.

85581343 is a deficient number, since it is larger than the sum of its proper divisors (430257).

85581343 is a wasteful number, since it uses less digits than its factorization.

85581343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430256.

The product of its digits is 57600, while the sum is 37.

The square root of 85581343 is about 9251.0184844697. The cubic root of 85581343 is about 440.6830695427.

The spelling of 85581343 in words is "eighty-five million, five hundred eighty-one thousand, three hundred forty-three".