2622491 has 4 divisors (see below), whose sum is σ = 2667000. Its totient is φ = 2577984.

The previous prime is 2622479. The next prime is 2622511. The reversal of 2622491 is 1942262.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2622491 - 2⁶ = 2622427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2622491.

It is not an unprimeable number, because it can be changed into a prime (2622461) 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 3 ways as a sum of consecutive naturals, for example, 22166 + ... + 22283.

It is an arithmetic number, because the mean of its divisors is an integer number (666750).

2^2622491 is an apocalyptic number.

2622491 is a deficient number, since it is larger than the sum of its proper divisors (44509).

2622491 is an equidigital number, since it uses as much as digits as its factorization.

2622491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44508.

The product of its digits is 1728, while the sum is 26.

The square root of 2622491 is about 1619.4106952839. The cubic root of 2622491 is about 137.9022447089.

It can be divided in two parts, 2622 and 491, that added together give a palindrome (3113).

The spelling of 2622491 in words is "two million, six hundred twenty-two thousand, four hundred ninety-one".