2101533 has 32 divisors (see below), whose sum is σ = 3532800. Its totient is φ = 1083456.

The previous prime is 2101531. The next prime is 2101549. The reversal of 2101533 is 3351012.

It is a happy number.

It is not a de Polignac number, because 2101533 - 2¹ = 2101531 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 0 + 1 + 5 + 3⁷ + 3⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9063 + ... + 9291.

It is an arithmetic number, because the mean of its divisors is an integer number (110400).

2^2101533 is an apocalyptic number.

2101533 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2101533 is a deficient number, since it is larger than the sum of its proper divisors (1431267).

2101533 is a wasteful number, since it uses less digits than its factorization.

2101533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 2101533 is about 1449.6665133747. Note that the first 3 decimals coincide. The cubic root of 2101533 is about 128.0890696791.

Adding to 2101533 its reverse (3351012), we get a palindrome (5452545).

The spelling of 2101533 in words is "two million, one hundred one thousand, five hundred thirty-three".