2524221 has 24 divisors (see below), whose sum is σ = 4218240. Its totient is φ = 1424736.

The previous prime is 2524219. The next prime is 2524259. The reversal of 2524221 is 1224252.

It is not a de Polignac number, because 2524221 - 2¹ = 2524219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2524194 and 2524203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2524201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6295 + ... + 6683.

It is an arithmetic number, because the mean of its divisors is an integer number (175760).

2^2524221 is an apocalyptic number.

2524221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2524221 is a deficient number, since it is larger than the sum of its proper divisors (1694019).

2524221 is a wasteful number, since it uses less digits than its factorization.

2524221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505 (or 502 counting only the distinct ones).

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

The square root of 2524221 is about 1588.7797204144. The cubic root of 2524221 is about 136.1577789655.

Adding to 2524221 its reverse (1224252), we get a palindrome (3748473).

The spelling of 2524221 in words is "two million, five hundred twenty-four thousand, two hundred twenty-one".