85383021 has 16 divisors (see below), whose sum is σ = 117987840. Its totient is φ = 54864960.

The previous prime is 85382977. The next prime is 85383041. The reversal of 85383021 is 12038358.

It is a happy number.

It is not a de Polignac number, because 85383021 - 2⁷ = 85382893 is a prime.

It is a super-3 number, since 3×85383021³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85383021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85383041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23311 + ... + 26723.

It is an arithmetic number, because the mean of its divisors is an integer number (7374240).

Almost surely, 2^85383021 is an apocalyptic number.

It is an amenable number.

85383021 is a deficient number, since it is larger than the sum of its proper divisors (32604819).

85383021 is a wasteful number, since it uses less digits than its factorization.

85383021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3716.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 85383021 is about 9240.2933394996. The cubic root of 85383021 is about 440.3424004917.

The spelling of 85383021 in words is "eighty-five million, three hundred eighty-three thousand, twenty-one".