326316553 has 2 divisors, whose sum is σ = 326316554. Its totient is φ = 326316552.

The previous prime is 326316533. The next prime is 326316563. The reversal of 326316553 is 355613623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 316412944 + 9903609 = 17788^2 + 3147^2 .

It is a cyclic number.

It is not a de Polignac number, because 326316553 - 2⁵ = 326316521 is a prime.

It is not a weakly prime, because it can be changed into another prime (326316533) 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, 163158276 + 163158277.

It is an arithmetic number, because the mean of its divisors is an integer number (163158277).

Almost surely, 2^326316553 is an apocalyptic number.

It is an amenable number.

326316553 is a deficient number, since it is larger than the sum of its proper divisors (1).

326316553 is an equidigital number, since it uses as much as digits as its factorization.

326316553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 34.

The square root of 326316553 is about 18064.2340828500. The cubic root of 326316553 is about 688.4615678921.

The spelling of 326316553 in words is "three hundred twenty-six million, three hundred sixteen thousand, five hundred fifty-three".