41252581 has 2 divisors, whose sum is σ = 41252582. Its totient is φ = 41252580.

The previous prime is 41252579. The next prime is 41252621. The reversal of 41252581 is 18525214.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38328481 + 2924100 = 6191^2 + 1710^2 .

It is a cyclic number.

It is not a de Polignac number, because 41252581 - 2¹ = 41252579 is a prime.

It is a super-2 number, since 2×41252581² = 3403550878323122, which contains 22 as substring.

Together with 41252579, it forms a pair of twin primes.

It is a Chen prime.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41253581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20626290 + 20626291.

It is an arithmetic number, because the mean of its divisors is an integer number (20626291).

Almost surely, 2^41252581 is an apocalyptic number.

It is an amenable number.

41252581 is a deficient number, since it is larger than the sum of its proper divisors (1).

41252581 is an equidigital number, since it uses as much as digits as its factorization.

41252581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3200, while the sum is 28.

The square root of 41252581 is about 6422.8172167671. The cubic root of 41252581 is about 345.5283677351.

Adding to 41252581 its reverse (18525214), we get a palindrome (59777795).

The spelling of 41252581 in words is "forty-one million, two hundred fifty-two thousand, five hundred eighty-one".