41500021 has 2 divisors, whose sum is σ = 41500022. Its totient is φ = 41500020.

The previous prime is 41499973. The next prime is 41500033. The reversal of 41500021 is 12000514.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40259025 + 1240996 = 6345^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 41500021 - 2⁷ = 41499893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 41499974 and 41500010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41500091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20750010 + 20750011.

It is an arithmetic number, because the mean of its divisors is an integer number (20750011).

Almost surely, 2^41500021 is an apocalyptic number.

It is an amenable number.

41500021 is a deficient number, since it is larger than the sum of its proper divisors (1).

41500021 is an equidigital number, since it uses as much as digits as its factorization.

41500021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 41500021 is about 6442.0509932785. The cubic root of 41500021 is about 346.2178370295.

Adding to 41500021 its reverse (12000514), we get a palindrome (53500535).

The spelling of 41500021 in words is "forty-one million, five hundred thousand, twenty-one".