41781281 has 2 divisors, whose sum is σ = 41781282. Its totient is φ = 41781280.

The previous prime is 41781277. The next prime is 41781329. The reversal of 41781281 is 18218714.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41165056 + 616225 = 6416^2 + 785^2 .

It is a cyclic number.

It is not a de Polignac number, because 41781281 - 2² = 41781277 is a prime.

It is a super-2 number, since 2×41781281² = 3491350884001922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (41783281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20890640 + 20890641.

It is an arithmetic number, because the mean of its divisors is an integer number (20890641).

Almost surely, 2^41781281 is an apocalyptic number.

It is an amenable number.

41781281 is a deficient number, since it is larger than the sum of its proper divisors (1).

41781281 is an equidigital number, since it uses as much as digits as its factorization.

41781281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 32.

The square root of 41781281 is about 6463.8441348783. The cubic root of 41781281 is about 346.9982227151.

Adding to 41781281 its reverse (18218714), we get a palindrome (59999995).

The spelling of 41781281 in words is "forty-one million, seven hundred eighty-one thousand, two hundred eighty-one".