85557933 has 6 divisors (see below), whose sum is σ = 123583694. Its totient is φ = 57038616.

The previous prime is 85557887. The next prime is 85557943. The reversal of 85557933 is 33975558.

85557933 is a `hidden beast` number, since 8 + 5 + 557 + 93 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 60186564 + 25371369 = 7758^2 + 5037^2 .

It is not a de Polignac number, because 85557933 - 2²¹ = 83460781 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 (85557943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4753210 + ... + 4753227.

Almost surely, 2^85557933 is an apocalyptic number.

It is an amenable number.

85557933 is a deficient number, since it is larger than the sum of its proper divisors (38025761).

85557933 is a wasteful number, since it uses less digits than its factorization.

85557933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9506443 (or 9506440 counting only the distinct ones).

The product of its digits is 567000, while the sum is 45.

The square root of 85557933 is about 9249.7531318409. The cubic root of 85557933 is about 440.6428842598.

The spelling of 85557933 in words is "eighty-five million, five hundred fifty-seven thousand, nine hundred thirty-three".