85243541 has 4 divisors (see below), whose sum is σ = 85278732. Its totient is φ = 85208352.

The previous prime is 85243537. The next prime is 85243547. The reversal of 85243541 is 14534258.

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 39627025 + 45616516 = 6295^2 + 6754^2 .

It is a cyclic number.

It is not a de Polignac number, because 85243541 - 2² = 85243537 is a prime.

It is a super-2 number, since 2×85243541² = 14532922564437362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85243498 and 85243507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85243547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13670 + ... + 18903.

It is an arithmetic number, because the mean of its divisors is an integer number (21319683).

Almost surely, 2^85243541 is an apocalyptic number.

It is an amenable number.

85243541 is a deficient number, since it is larger than the sum of its proper divisors (35191).

85243541 is a wasteful number, since it uses less digits than its factorization.

85243541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35190.

The product of its digits is 19200, while the sum is 32.

The square root of 85243541 is about 9232.7428752240. The cubic root of 85243541 is about 440.1024916201.

Adding to 85243541 its reverse (14534258), we get a palindrome (99777799).

The spelling of 85243541 in words is "eighty-five million, two hundred forty-three thousand, five hundred forty-one".