41672581 has 4 divisors (see below), whose sum is σ = 41821164. Its totient is φ = 41524000.

The previous prime is 41672563. The next prime is 41672591. The reversal of 41672581 is 18527614.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17564481 + 24108100 = 4191^2 + 4910^2 .

It is a cyclic number.

It is not a de Polignac number, because 41672581 - 2⁵ = 41672549 is a prime.

It is a super-2 number, since 2×41672581² = 3473208014403122, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41672591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73870 + ... + 74431.

It is an arithmetic number, because the mean of its divisors is an integer number (10455291).

Almost surely, 2^41672581 is an apocalyptic number.

It is an amenable number.

41672581 is a deficient number, since it is larger than the sum of its proper divisors (148583).

41672581 is a wasteful number, since it uses less digits than its factorization.

41672581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148582.

The product of its digits is 13440, while the sum is 34.

The square root of 41672581 is about 6455.4303497133. The cubic root of 41672581 is about 346.6970394781.

The spelling of 41672581 in words is "forty-one million, six hundred seventy-two thousand, five hundred eighty-one".