41721601 has 2 divisors, whose sum is σ = 41721602. Its totient is φ = 41721600.

The previous prime is 41721599. The next prime is 41721619. The reversal of 41721601 is 10612714.

41721601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40947201 + 774400 = 6399^2 + 880^2 .

It is a cyclic number.

It is not a de Polignac number, because 41721601 - 2¹ = 41721599 is a prime.

Together with 41721599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (41721671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20860800 + 20860801.

It is an arithmetic number, because the mean of its divisors is an integer number (20860801).

Almost surely, 2^41721601 is an apocalyptic number.

It is an amenable number.

41721601 is a deficient number, since it is larger than the sum of its proper divisors (1).

41721601 is an equidigital number, since it uses as much as digits as its factorization.

41721601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 41721601 is about 6459.2260372277. The cubic root of 41721601 is about 346.8329276246.

The spelling of 41721601 in words is "forty-one million, seven hundred twenty-one thousand, six hundred one".