41981085 has 20 divisors (see below), whose sum is σ = 75255708. Its totient is φ = 22389696.

The previous prime is 41981083. The next prime is 41981087. The reversal of 41981085 is 58018914.

It is an interprime number because it is at equal distance from previous prime (41981083) and next prime (41981087).

It can be written as a sum of positive squares in 2 ways, for example, as 5184729 + 36796356 = 2277^2 + 6066^2 .

It is not a de Polignac number, because 41981085 - 2¹ = 41981083 is a prime.

It is a super-2 number, since 2×41981085² = 3524822995554450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41981081) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 51424 + ... + 52233.

Almost surely, 2^41981085 is an apocalyptic number.

41981085 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

41981085 is a deficient number, since it is larger than the sum of its proper divisors (33274623).

41981085 is a wasteful number, since it uses less digits than its factorization.

41981085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103674 (or 103665 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 41981085 is about 6479.2812101343. The cubic root of 41981085 is about 347.5504748723.

Adding to 41981085 its reverse (58018914), we get a palindrome (99999999).

The spelling of 41981085 in words is "forty-one million, nine hundred eighty-one thousand, eighty-five".