641305151 has 2 divisors, whose sum is σ = 641305152. Its totient is φ = 641305150.

The previous prime is 641305123. The next prime is 641305163. The reversal of 641305151 is 151503146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 641305151 - 2¹⁰ = 641304127 is a prime.

It is a super-2 number, since 2×641305151² = 822544593398265602, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 641305151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641305351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320652575 + 320652576.

It is an arithmetic number, because the mean of its divisors is an integer number (320652576).

Almost surely, 2^641305151 is an apocalyptic number.

641305151 is a deficient number, since it is larger than the sum of its proper divisors (1).

641305151 is an equidigital number, since it uses as much as digits as its factorization.

641305151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 641305151 is about 25324.0034552201. The cubic root of 641305151 is about 862.3592829594.

Adding to 641305151 its reverse (151503146), we get a palindrome (792808297).

The spelling of 641305151 in words is "six hundred forty-one million, three hundred five thousand, one hundred fifty-one".