2521416 has 32 divisors (see below), whose sum is σ = 6508800. Its totient is φ = 813120.

The previous prime is 2521397. The next prime is 2521417. The reversal of 2521416 is 6141252.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2521392 and 2521401.

It is not an unprimeable number, because it can be changed into a prime (2521417) 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, 951 + ... + 2438.

It is an arithmetic number, because the mean of its divisors is an integer number (203400).

2^2521416 is an apocalyptic number.

It is an amenable number.

2521416 is an abundant number, since it is smaller than the sum of its proper divisors (3987384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2521416 is a wasteful number, since it uses less digits than its factorization.

2521416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3429 (or 3425 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 2521416 is about 1587.8967220824. The cubic root of 2521416 is about 136.1073258916.

Adding to 2521416 its reverse (6141252), we get a palindrome (8662668).

The spelling of 2521416 in words is "two million, five hundred twenty-one thousand, four hundred sixteen".