2041581 has 8 divisors (see below), whose sum is σ = 2882304. Its totient is φ = 1280960.

The previous prime is 2041579. The next prime is 2041583. The reversal of 2041581 is 1851402.

It is an interprime number because it is at equal distance from previous prime (2041579) and next prime (2041583).

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

It is a cyclic number.

It is not a de Polignac number, because 2041581 - 2¹ = 2041579 is a prime.

It is a super-2 number, since 2×2041581² = 8336105959122, which contains 22 as substring.

2041581 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2041583) 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, 19965 + ... + 20066.

It is an arithmetic number, because the mean of its divisors is an integer number (360288).

2^2041581 is an apocalyptic number.

It is an amenable number.

2041581 is a deficient number, since it is larger than the sum of its proper divisors (840723).

2041581 is a wasteful number, since it uses less digits than its factorization.

2041581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40051.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 2041581 is about 1428.8390392203. The cubic root of 2041581 is about 126.8592691636.

Adding to 2041581 its reverse (1851402), we get a palindrome (3892983).

The spelling of 2041581 in words is "two million, forty-one thousand, five hundred eighty-one".