2621441 has 4 divisors (see below), whose sum is σ = 2641584. Its totient is φ = 2601300.

The previous prime is 2621431. The next prime is 2621447. The reversal of 2621441 is 1441262.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2621441 - 2¹⁰ = 2620417 is a prime.

It is a Duffinian number.

2621441 is a modest number, since divided by 1441 gives 262 as remainder.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2621447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9875 + ... + 10136.

It is an arithmetic number, because the mean of its divisors is an integer number (660396).

It is a Proth number, since it is equal to 5 ⋅ 2¹⁹ + 1 and 5 < 2¹⁹.

2^2621441 is an apocalyptic number.

It is an amenable number.

2621441 is a deficient number, since it is larger than the sum of its proper divisors (20143).

2621441 is a wasteful number, since it uses less digits than its factorization.

2621441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20142.

The product of its digits is 384, while the sum is 20.

The square root of 2621441 is about 1619.0864708224. The cubic root of 2621441 is about 137.8838376949.

The spelling of 2621441 in words is "two million, six hundred twenty-one thousand, four hundred forty-one".