2622521 has 8 divisors (see below), whose sum is σ = 2872800. Its totient is φ = 2374240.

The previous prime is 2622517. The next prime is 2622533. The reversal of 2622521 is 1252262.

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

It is not a de Polignac number, because 2622521 - 2² = 2622517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2622493 and 2622502.

It is not an unprimeable number, because it can be changed into a prime (2622511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4325 + ... + 4893.

It is an arithmetic number, because the mean of its divisors is an integer number (359100).

2^2622521 is an apocalyptic number.

It is an amenable number.

2622521 is a deficient number, since it is larger than the sum of its proper divisors (250279).

2622521 is a wasteful number, since it uses less digits than its factorization.

2622521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999.

The product of its digits is 480, while the sum is 20.

The square root of 2622521 is about 1619.4199578862. The cubic root of 2622521 is about 137.9027705514.

Adding to 2622521 its reverse (1252262), we get a palindrome (3874783).

It can be divided in two parts, 26225 and 21, that multiplied together give a triangular number (550725 = T₁₀₄₉).

The spelling of 2622521 in words is "two million, six hundred twenty-two thousand, five hundred twenty-one".