2252421 has 8 divisors (see below), whose sum is σ = 3336960. Its totient is φ = 1501596.

The previous prime is 2252407. The next prime is 2252441. The reversal of 2252421 is 1242522.

It is not a de Polignac number, because 2252421 - 2⁵ = 2252389 is a prime.

It is a super-2 number, since 2×2252421² = 10146800722482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2252394 and 2252403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2252441) 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, 41685 + ... + 41738.

It is an arithmetic number, because the mean of its divisors is an integer number (417120).

2^2252421 is an apocalyptic number.

It is an amenable number.

2252421 is a deficient number, since it is larger than the sum of its proper divisors (1084539).

2252421 is an equidigital number, since it uses as much as digits as its factorization.

2252421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83432 (or 83426 counting only the distinct ones).

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

The square root of 2252421 is about 1500.8067830337. The cubic root of 2252421 is about 131.0840514927.

Adding to 2252421 its reverse (1242522), we get a palindrome (3494943).

The spelling of 2252421 in words is "two million, two hundred fifty-two thousand, four hundred twenty-one".