601221641 has 2 divisors, whose sum is σ = 601221642. Its totient is φ = 601221640.

The previous prime is 601221563. The next prime is 601221653. The reversal of 601221641 is 146122106.

601221641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 589518400 + 11703241 = 24280^2 + 3421^2 .

It is a cyclic number.

It is not a de Polignac number, because 601221641 - 2¹⁰ = 601220617 is a prime.

It is a super-2 number, since 2×601221641² = 722934923213465762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (601221661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300610820 + 300610821.

It is an arithmetic number, because the mean of its divisors is an integer number (300610821).

Almost surely, 2^601221641 is an apocalyptic number.

It is an amenable number.

601221641 is a deficient number, since it is larger than the sum of its proper divisors (1).

601221641 is an equidigital number, since it uses as much as digits as its factorization.

601221641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 601221641 is about 24519.8213900509. The cubic root of 601221641 is about 844.0047060862.

Adding to 601221641 its reverse (146122106), we get a palindrome (747343747).

The spelling of 601221641 in words is "six hundred one million, two hundred twenty-one thousand, six hundred forty-one".