85557436 has 6 divisors (see below), whose sum is σ = 149725520. Its totient is φ = 42778716.

The previous prime is 85557397. The next prime is 85557443. The reversal of 85557436 is 63475558.

It is a junction number, because it is equal to n+sod(n) for n = 85557392 and 85557401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10694676 + ... + 10694683.

Almost surely, 2^85557436 is an apocalyptic number.

It is an amenable number.

85557436 is a deficient number, since it is larger than the sum of its proper divisors (64168084).

85557436 is a wasteful number, since it uses less digits than its factorization.

85557436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21389363 (or 21389361 counting only the distinct ones).

The product of its digits is 504000, while the sum is 43.

The square root of 85557436 is about 9249.7262662200. The cubic root of 85557436 is about 440.6420310370.

The spelling of 85557436 in words is "eighty-five million, five hundred fifty-seven thousand, four hundred thirty-six".