2452221 has 8 divisors (see below), whose sum is σ = 3632960. Its totient is φ = 1634796.

The previous prime is 2452207. The next prime is 2452223. The reversal of 2452221 is 1222542.

It is not a de Polignac number, because 2452221 - 2¹⁴ = 2435837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2452194 and 2452203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2452223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45385 + ... + 45438.

It is an arithmetic number, because the mean of its divisors is an integer number (454120).

2^2452221 is an apocalyptic number.

It is an amenable number.

2452221 is a deficient number, since it is larger than the sum of its proper divisors (1180739).

2452221 is an equidigital number, since it uses as much as digits as its factorization.

2452221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90832 (or 90826 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 2452221 is about 1565.9568959585. The cubic root of 2452221 is about 134.8506991418.

Adding to 2452221 its reverse (1222542), we get a palindrome (3674763).

The spelling of 2452221 in words is "two million, four hundred fifty-two thousand, two hundred twenty-one".