2040581 has 8 divisors (see below), whose sum is σ = 2162400. Its totient is φ = 1920240.

The previous prime is 2040559. The next prime is 2040593. The reversal of 2040581 is 1850402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2040581 is a prime.

It is a super-2 number, since 2×2040581² = 8327941635122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3755 + ... + 4263.

It is an arithmetic number, because the mean of its divisors is an integer number (270300).

2^2040581 is an apocalyptic number.

It is an amenable number.

2040581 is a deficient number, since it is larger than the sum of its proper divisors (121819).

2040581 is a wasteful number, since it uses less digits than its factorization.

2040581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2040581 is about 1428.4890619112. The cubic root of 2040581 is about 126.8385531944.

Adding to 2040581 its reverse (1850402), we get a palindrome (3890983).

The spelling of 2040581 in words is "two million, forty thousand, five hundred eighty-one".