82533931 has 4 divisors (see below), whose sum is σ = 83088000. Its totient is φ = 81979864.

The previous prime is 82533911. The next prime is 82533947. The reversal of 82533931 is 13933528.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82533931 - 2¹⁵ = 82501163 is a prime.

It is a super-2 number, since 2×82533931² = 13623699532625522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82533901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276811 + ... + 277108.

It is an arithmetic number, because the mean of its divisors is an integer number (20772000).

Almost surely, 2^82533931 is an apocalyptic number.

82533931 is a deficient number, since it is larger than the sum of its proper divisors (554069).

82533931 is a wasteful number, since it uses less digits than its factorization.

82533931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554068.

The product of its digits is 19440, while the sum is 34.

The square root of 82533931 is about 9084.8187103541. The cubic root of 82533931 is about 435.3890578385.

The spelling of 82533931 in words is "eighty-two million, five hundred thirty-three thousand, nine hundred thirty-one".