2081533 has 4 divisors (see below), whose sum is σ = 2153340. Its totient is φ = 2009728.

The previous prime is 2081491. The next prime is 2081537. The reversal of 2081533 is 3351802.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1258884 + 822649 = 1122^2 + 907^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2081533 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 (2081537) 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, 35860 + ... + 35917.

It is an arithmetic number, because the mean of its divisors is an integer number (538335).

2^2081533 is an apocalyptic number.

It is an amenable number.

2081533 is a deficient number, since it is larger than the sum of its proper divisors (71807).

2081533 is an equidigital number, since it uses as much as digits as its factorization.

2081533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71806.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2081533 is about 1442.7518844209. The cubic root of 2081533 is about 127.6814384654.

The spelling of 2081533 in words is "two million, eighty-one thousand, five hundred thirty-three".