2642521 has 12 divisors (see below), whose sum is σ = 3100800. Its totient is φ = 2245320.

The previous prime is 2642513. The next prime is 2642537. The reversal of 2642521 is 1252462.

It is not a de Polignac number, because 2642521 - 2³ = 2642513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2642492 and 2642501.

It is not an unprimeable number, because it can be changed into a prime (2642561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9616 + ... + 9886.

It is an arithmetic number, because the mean of its divisors is an integer number (258400).

2^2642521 is an apocalyptic number.

It is an amenable number.

2642521 is a deficient number, since it is larger than the sum of its proper divisors (458279).

2642521 is a wasteful number, since it uses less digits than its factorization.

2642521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 477 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 2642521 is about 1625.5832799337. The cubic root of 2642521 is about 138.2524434755.

Adding to 2642521 its reverse (1252462), we get a palindrome (3894983).

The spelling of 2642521 in words is "two million, six hundred forty-two thousand, five hundred twenty-one".