2521626 has 8 divisors (see below), whose sum is σ = 5043264. Its totient is φ = 840540.

The previous prime is 2521621. The next prime is 2521643. The reversal of 2521626 is 6261252.

2521626 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

2521626 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2521596 and 2521605.

It is not an unprimeable number, because it can be changed into a prime (2521621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210130 + ... + 210141.

It is an arithmetic number, because the mean of its divisors is an integer number (630408).

2^2521626 is an apocalyptic number.

2521626 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2521626 is a wasteful number, since it uses less digits than its factorization.

2521626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420276.

The product of its digits is 1440, while the sum is 24.

The square root of 2521626 is about 1587.9628459130. The cubic root of 2521626 is about 136.1111044225. Note that the first 4 decimals are identical.

Adding to 2521626 its reverse (6261252), we get a palindrome (8782878).

The spelling of 2521626 in words is "two million, five hundred twenty-one thousand, six hundred twenty-six".