41007721 has 2 divisors, whose sum is σ = 41007722. Its totient is φ = 41007720.

The previous prime is 41007713. The next prime is 41007739. The reversal of 41007721 is 12770014.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34351321 + 6656400 = 5861^2 + 2580^2 .

It is a cyclic number.

It is not a de Polignac number, because 41007721 - 2³ = 41007713 is a prime.

It is a super-2 number, since 2×41007721² = 3363266363227682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 41007692 and 41007701.

It is not a weakly prime, because it can be changed into another prime (41007751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20503860 + 20503861.

It is an arithmetic number, because the mean of its divisors is an integer number (20503861).

Almost surely, 2^41007721 is an apocalyptic number.

It is an amenable number.

41007721 is a deficient number, since it is larger than the sum of its proper divisors (1).

41007721 is an equidigital number, since it uses as much as digits as its factorization.

41007721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 41007721 is about 6403.7271178588. The cubic root of 41007721 is about 344.8433679523.

Adding to 41007721 its reverse (12770014), we get a palindrome (53777735).

The spelling of 41007721 in words is "forty-one million, seven thousand, seven hundred twenty-one".