2533021 has 4 divisors (see below), whose sum is σ = 2594844. Its totient is φ = 2471200.

The previous prime is 2533019. The next prime is 2533031. The reversal of 2533021 is 1203352.

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 68121 + 2464900 = 261^2 + 1570^2 .

It is a cyclic number.

It is not a de Polignac number, because 2533021 - 2¹ = 2533019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2532986 and 2533004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2533031) 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, 30850 + ... + 30931.

It is an arithmetic number, because the mean of its divisors is an integer number (648711).

2^2533021 is an apocalyptic number.

It is an amenable number.

2533021 is a deficient number, since it is larger than the sum of its proper divisors (61823).

2533021 is an equidigital number, since it uses as much as digits as its factorization.

2533021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61822.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 2533021 is about 1591.5467319561. The cubic root of 2533021 is about 136.3158209596.

Adding to 2533021 its reverse (1203352), we get a palindrome (3736373).

The spelling of 2533021 in words is "two million, five hundred thirty-three thousand, twenty-one".