2253921 has 4 divisors (see below), whose sum is σ = 3005232. Its totient is φ = 1502612.

The previous prime is 2253919. The next prime is 2253941. The reversal of 2253921 is 1293522.

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 2253921 - 2¹ = 2253919 is a prime.

It is a D-number.

2253921 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2253891 and 2253900.

It is not an unprimeable number, because it can be changed into a prime (2253941) 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, 375651 + ... + 375656.

It is an arithmetic number, because the mean of its divisors is an integer number (751308).

2^2253921 is an apocalyptic number.

It is an amenable number.

2253921 is a deficient number, since it is larger than the sum of its proper divisors (751311).

2253921 is an equidigital number, since it uses as much as digits as its factorization.

2253921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751310.

The product of its digits is 1080, while the sum is 24.

The square root of 2253921 is about 1501.3064310793. The cubic root of 2253921 is about 131.1131435149.

The spelling of 2253921 in words is "two million, two hundred fifty-three thousand, nine hundred twenty-one".