41285581 has 2 divisors, whose sum is σ = 41285582. Its totient is φ = 41285580.

The previous prime is 41285579. The next prime is 41285597. The reversal of 41285581 is 18558214.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39062500 + 2223081 = 6250^2 + 1491^2 .

It is a cyclic number.

It is not a de Polignac number, because 41285581 - 2¹ = 41285579 is a prime.

It is a super-3 number, since 3×41285581³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 41285579, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41285501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20642790 + 20642791.

It is an arithmetic number, because the mean of its divisors is an integer number (20642791).

Almost surely, 2^41285581 is an apocalyptic number.

It is an amenable number.

41285581 is a deficient number, since it is larger than the sum of its proper divisors (1).

41285581 is an equidigital number, since it uses as much as digits as its factorization.

41285581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12800, while the sum is 34.

The square root of 41285581 is about 6425.3856693587. The cubic root of 41285581 is about 345.6204783113.

The spelling of 41285581 in words is "forty-one million, two hundred eighty-five thousand, five hundred eighty-one".