320420053 has 2 divisors, whose sum is σ = 320420054. Its totient is φ = 320420052.

The previous prime is 320420039. The next prime is 320420059. The reversal of 320420053 is 350024023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282004849 + 38415204 = 16793^2 + 6198^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320420053 is a prime.

It is a super-3 number, since 3×320420053³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 320420053.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320420059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160210026 + 160210027.

It is an arithmetic number, because the mean of its divisors is an integer number (160210027).

Almost surely, 2^320420053 is an apocalyptic number.

It is an amenable number.

320420053 is a deficient number, since it is larger than the sum of its proper divisors (1).

320420053 is an equidigital number, since it uses as much as digits as its factorization.

320420053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 320420053 is about 17900.2808078533. The cubic root of 320420053 is about 684.2895313657.

Adding to 320420053 its reverse (350024023), we get a palindrome (670444076).

The spelling of 320420053 in words is "three hundred twenty million, four hundred twenty thousand, fifty-three".