305061641 has 2 divisors, whose sum is σ = 305061642. Its totient is φ = 305061640.

The previous prime is 305061637. The next prime is 305061649. The reversal of 305061641 is 146160503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 246615616 + 58446025 = 15704^2 + 7645^2 .

It is a cyclic number.

It is not a de Polignac number, because 305061641 - 2² = 305061637 is a prime.

It is a super-2 number, since 2×305061641² = 186125209619225762, 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 305061641.

It is not a weakly prime, because it can be changed into another prime (305061649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152530820 + 152530821.

It is an arithmetic number, because the mean of its divisors is an integer number (152530821).

Almost surely, 2^305061641 is an apocalyptic number.

It is an amenable number.

305061641 is a deficient number, since it is larger than the sum of its proper divisors (1).

305061641 is an equidigital number, since it uses as much as digits as its factorization.

305061641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 305061641 is about 17466.0138841122. The cubic root of 305061641 is about 673.1768936685.

The spelling of 305061641 in words is "three hundred five million, sixty-one thousand, six hundred forty-one".