2113533 has 20 divisors (see below), whose sum is σ = 3201660. Its totient is φ = 1389312.

The previous prime is 2113523. The next prime is 2113567. The reversal of 2113533 is 3353112.

It can be written as a sum of positive squares in 2 ways, for example, as 480249 + 1633284 = 693^2 + 1278^2 .

It is not a de Polignac number, because 2113533 - 2⁶ = 2113469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113513) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7723 + ... + 7991.

It is an arithmetic number, because the mean of its divisors is an integer number (160083).

2^2113533 is an apocalyptic number.

It is an amenable number.

2113533 is a deficient number, since it is larger than the sum of its proper divisors (1088127).

2113533 is an equidigital number, since it uses as much as digits as its factorization.

2113533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 369 counting only the distinct ones).

The product of its digits is 270, while the sum is 18.

The square root of 2113533 is about 1453.7995047461. The cubic root of 2113533 is about 128.3324083065.

Adding to 2113533 its reverse (3353112), we get a palindrome (5466645).

The spelling of 2113533 in words is "two million, one hundred thirteen thousand, five hundred thirty-three".