82681533 has 32 divisors (see below), whose sum is σ = 134507520. Its totient is φ = 49780080.

The previous prime is 82681519. The next prime is 82681541. The reversal of 82681533 is 33518628.

It is not a de Polignac number, because 82681533 - 2⁴ = 82681517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82681513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48766 + ... + 50432.

It is an arithmetic number, because the mean of its divisors is an integer number (4203360).

Almost surely, 2^82681533 is an apocalyptic number.

It is an amenable number.

82681533 is a deficient number, since it is larger than the sum of its proper divisors (51825987).

82681533 is a wasteful number, since it uses less digits than its factorization.

82681533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854 (or 1848 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 82681533 is about 9092.9386339071. The cubic root of 82681533 is about 435.6484502415.

It can be divided in two parts, 8268 and 1533, that added together give a square (9801 = 99²).

The spelling of 82681533 in words is "eighty-two million, six hundred eighty-one thousand, five hundred thirty-three".