320553151 has 4 divisors (see below), whose sum is σ = 320598432. Its totient is φ = 320507872.

The previous prime is 320553131. The next prime is 320553157. The reversal of 320553151 is 151355023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320553151 - 2²⁷ = 186335423 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 (320553157) 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, 9466 + ... + 27031.

It is an arithmetic number, because the mean of its divisors is an integer number (80149608).

Almost surely, 2^320553151 is an apocalyptic number.

320553151 is a deficient number, since it is larger than the sum of its proper divisors (45281).

320553151 is an equidigital number, since it uses as much as digits as its factorization.

320553151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45280.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 320553151 is about 17903.9981847631. The cubic root of 320553151 is about 684.3842663438.

The spelling of 320553151 in words is "three hundred twenty million, five hundred fifty-three thousand, one hundred fifty-one".