2581941 has 4 divisors (see below), whose sum is σ = 3442592. Its totient is φ = 1721292.

The previous prime is 2581939. The next prime is 2581951. The reversal of 2581941 is 1491852.

It is a happy number.

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 not a de Polignac number, because 2581941 - 2¹ = 2581939 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2581899 and 2581908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2581921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430321 + ... + 430326.

It is an arithmetic number, because the mean of its divisors is an integer number (860648).

2^2581941 is an apocalyptic number.

It is an amenable number.

2581941 is a deficient number, since it is larger than the sum of its proper divisors (860651).

2581941 is an equidigital number, since it uses as much as digits as its factorization.

2581941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860650.

The product of its digits is 2880, while the sum is 30.

The square root of 2581941 is about 1606.8419337321. The cubic root of 2581941 is about 137.1877830554.

The spelling of 2581941 in words is "two million, five hundred eighty-one thousand, nine hundred forty-one".