85542613 has 8 divisors (see below), whose sum is σ = 92200248. Its totient is φ = 78896064.

The previous prime is 85542599. The next prime is 85542637. The reversal of 85542613 is 31624558.

It can be written as a sum of positive squares in 4 ways, for example, as 2331729 + 83210884 = 1527^2 + 9122^2 .

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

It is not a de Polignac number, because 85542613 - 2⁵ = 85542581 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 (85542643) 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 7 ways as a sum of consecutive naturals, for example, 20631 + ... + 24427.

It is an arithmetic number, because the mean of its divisors is an integer number (11525031).

Almost surely, 2^85542613 is an apocalyptic number.

It is an amenable number.

85542613 is a deficient number, since it is larger than the sum of its proper divisors (6657635).

85542613 is a wasteful number, since it uses less digits than its factorization.

85542613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5543.

The product of its digits is 28800, while the sum is 34.

The square root of 85542613 is about 9248.9249645567. The cubic root of 85542613 is about 440.6165821908.

The spelling of 85542613 in words is "eighty-five million, five hundred forty-two thousand, six hundred thirteen".