320808053 has 4 divisors (see below), whose sum is σ = 320848320. Its totient is φ = 320767788.

The previous prime is 320808011. The next prime is 320808091. The reversal of 320808053 is 350808023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320808053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320808253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3725 + ... + 25602.

It is an arithmetic number, because the mean of its divisors is an integer number (80212080).

Almost surely, 2^320808053 is an apocalyptic number.

It is an amenable number.

320808053 is a deficient number, since it is larger than the sum of its proper divisors (40267).

320808053 is a wasteful number, since it uses less digits than its factorization.

320808053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40266.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 320808053 is about 17911.1153477387. The cubic root of 320808053 is about 684.5656244091.

The spelling of 320808053 in words is "three hundred twenty million, eight hundred eight thousand, fifty-three".