41604721 has 2 divisors, whose sum is σ = 41604722. Its totient is φ = 41604720.

The previous prime is 41604701. The next prime is 41604727. The reversal of 41604721 is 12740614.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33223696 + 8381025 = 5764^2 + 2895^2 .

It is a cyclic number.

It is not a de Polignac number, because 41604721 - 2²¹ = 39507569 is a prime.

It is a super-3 number, since 3×41604721³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (41604727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20802360 + 20802361.

It is an arithmetic number, because the mean of its divisors is an integer number (20802361).

Almost surely, 2^41604721 is an apocalyptic number.

It is an amenable number.

41604721 is a deficient number, since it is larger than the sum of its proper divisors (1).

41604721 is an equidigital number, since it uses as much as digits as its factorization.

41604721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 41604721 is about 6450.1721682448. The cubic root of 41604721 is about 346.5087490598.

The spelling of 41604721 in words is "forty-one million, six hundred four thousand, seven hundred twenty-one".