41872581 has 48 divisors (see below), whose sum is σ = 68155776. Its totient is φ = 24634368.

The previous prime is 41872559. The next prime is 41872591. The reversal of 41872581 is 18527814.

41872581 is a `hidden beast` number, since 4 + 1 + 8 + 72 + 581 = 666.

It is not a de Polignac number, because 41872581 - 2⁶ = 41872517 is a prime.

It is a super-2 number, since 2×41872581² = 3506626079203122, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41872511) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 256806 + ... + 256968.

It is an arithmetic number, because the mean of its divisors is an integer number (1419912).

Almost surely, 2^41872581 is an apocalyptic number.

It is an amenable number.

41872581 is a deficient number, since it is larger than the sum of its proper divisors (26283195).

41872581 is a wasteful number, since it uses less digits than its factorization.

41872581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 279 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 41872581 is about 6470.9026418267. The cubic root of 41872581 is about 347.2507910796.

The spelling of 41872581 in words is "forty-one million, eight hundred seventy-two thousand, five hundred eighty-one".