305222501 has 2 divisors, whose sum is σ = 305222502. Its totient is φ = 305222500.

The previous prime is 305222461. The next prime is 305222503. The reversal of 305222501 is 105222503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 268632100 + 36590401 = 16390^2 + 6049^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-305222501 is a prime.

Together with 305222503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305222503) 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, 152611250 + 152611251.

It is an arithmetic number, because the mean of its divisors is an integer number (152611251).

Almost surely, 2^305222501 is an apocalyptic number.

It is an amenable number.

305222501 is a deficient number, since it is larger than the sum of its proper divisors (1).

305222501 is an equidigital number, since it uses as much as digits as its factorization.

305222501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 305222501 is about 17470.6182203149. The cubic root of 305222501 is about 673.2951956691.

The spelling of 305222501 in words is "three hundred five million, two hundred twenty-two thousand, five hundred one".