2253021 has 4 divisors (see below), whose sum is σ = 3004032. Its totient is φ = 1502012.

The previous prime is 2252983. The next prime is 2253023. The reversal of 2253021 is 1203522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2253021 - 2¹⁹ = 1728733 is a prime.

It is a super-2 number, since 2×2253021² = 10152207252882, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2253023) 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, 375501 + ... + 375506.

It is an arithmetic number, because the mean of its divisors is an integer number (751008).

2^2253021 is an apocalyptic number.

It is an amenable number.

2253021 is a deficient number, since it is larger than the sum of its proper divisors (751011).

2253021 is an equidigital number, since it uses as much as digits as its factorization.

2253021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751010.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 2253021 is about 1501.0066622104. The cubic root of 2253021 is about 131.0956898510.

Adding to 2253021 its reverse (1203522), we get a palindrome (3456543).

The spelling of 2253021 in words is "two million, two hundred fifty-three thousand, twenty-one".