320551151 has 2 divisors, whose sum is σ = 320551152. Its totient is φ = 320551150.

The previous prime is 320551087. The next prime is 320551193. The reversal of 320551151 is 151155023.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320551151 - 2⁶ = 320551087 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320551951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160275575 + 160275576.

It is an arithmetic number, because the mean of its divisors is an integer number (160275576).

Almost surely, 2^320551151 is an apocalyptic number.

320551151 is a deficient number, since it is larger than the sum of its proper divisors (1).

320551151 is an equidigital number, since it uses as much as digits as its factorization.

320551151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 320551151 is about 17903.9423312297. The cubic root of 320551151 is about 684.3828430007.

The spelling of 320551151 in words is "three hundred twenty million, five hundred fifty-one thousand, one hundred fifty-one".