2102720533 has 8 divisors (see below), whose sum is σ = 2108937600. Its totient is φ = 2096514048.

The previous prime is 2102720509. The next prime is 2102720539. The reversal of 2102720533 is 3350272012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102720533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102720498 and 2102720507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102720539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551010 + ... + 554812.

It is an arithmetic number, because the mean of its divisors is an integer number (263617200).

Almost surely, 2^2102720533 is an apocalyptic number.

It is an amenable number.

2102720533 is a deficient number, since it is larger than the sum of its proper divisors (6217067).

2102720533 is an equidigital number, since it uses as much as digits as its factorization.

2102720533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5291.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 2102720533 is about 45855.4307906926. The cubic root of 2102720533 is about 1281.1319196736.

Adding to 2102720533 its reverse (3350272012), we get a palindrome (5452992545).

The spelling of 2102720533 in words is "two billion, one hundred two million, seven hundred twenty thousand, five hundred thirty-three".