2521424 has 20 divisors (see below), whose sum is σ = 4969920. Its totient is φ = 1238880.

The previous prime is 2521417. The next prime is 2521429. The reversal of 2521424 is 4241252.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2521396 and 2521405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521429) 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, 392 + ... + 2279.

It is an arithmetic number, because the mean of its divisors is an integer number (248496).

2^2521424 is an apocalyptic number.

It is an amenable number.

2521424 is a deficient number, since it is larger than the sum of its proper divisors (2448496).

2521424 is a wasteful number, since it uses less digits than its factorization.

2521424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2738 (or 2732 counting only the distinct ones).

The product of its digits is 640, while the sum is 20.

The square root of 2521424 is about 1587.8992411359. The cubic root of 2521424 is about 136.1074698395.

Adding to 2521424 its reverse (4241252), we get a palindrome (6762676).

The spelling of 2521424 in words is "two million, five hundred twenty-one thousand, four hundred twenty-four".