2521612 has 18 divisors (see below), whose sum is σ = 4525332. Its totient is φ = 1229184.

The previous prime is 2521609. The next prime is 2521613. The reversal of 2521612 is 2161252.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2521612.

It is not an unprimeable number, because it can be changed into a prime (2521613) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25948 + ... + 26044.

2^2521612 is an apocalyptic number.

It is an amenable number.

2521612 is a deficient number, since it is larger than the sum of its proper divisors (2003720).

2521612 is an equidigital number, since it uses as much as digits as its factorization.

2521612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 166 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 2521612 is about 1587.9584377433. The cubic root of 2521612 is about 136.1108525270.

Adding to 2521612 its reverse (2161252), we get a palindrome (4682864).

The spelling of 2521612 in words is "two million, five hundred twenty-one thousand, six hundred twelve".