41537981 has 2 divisors, whose sum is σ = 41537982. Its totient is φ = 41537980.

The previous prime is 41537941. The next prime is 41538001. The reversal of 41537981 is 18973514.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35940025 + 5597956 = 5995^2 + 2366^2 .

It is a cyclic number.

It is not a de Polignac number, because 41537981 - 2¹⁸ = 41275837 is a prime.

It is a super-2 number, since 2×41537981² = 3450807731112722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41537921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20768990 + 20768991.

It is an arithmetic number, because the mean of its divisors is an integer number (20768991).

Almost surely, 2^41537981 is an apocalyptic number.

It is an amenable number.

41537981 is a deficient number, since it is larger than the sum of its proper divisors (1).

41537981 is an equidigital number, since it uses as much as digits as its factorization.

41537981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 38.

The square root of 41537981 is about 6444.9965865003. The cubic root of 41537981 is about 346.3233664862.

The spelling of 41537981 in words is "forty-one million, five hundred thirty-seven thousand, nine hundred eighty-one".