320052545 has 4 divisors (see below), whose sum is σ = 384063060. Its totient is φ = 256042032.

The previous prime is 320052541. The next prime is 320052547. The reversal of 320052545 is 545250023.

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

It can be written as a sum of positive squares in 2 ways, for example, as 200958976 + 119093569 = 14176^2 + 10913^2 .

It is a cyclic number.

It is not a de Polignac number, because 320052545 - 2² = 320052541 is a prime.

It is a super-3 number, since 3×320052545³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (320052541) 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 in 3 ways as a sum of consecutive naturals, for example, 32005250 + ... + 32005259.

It is an arithmetic number, because the mean of its divisors is an integer number (96015765).

Almost surely, 2^320052545 is an apocalyptic number.

It is an amenable number.

320052545 is a deficient number, since it is larger than the sum of its proper divisors (64010515).

320052545 is an equidigital number, since it uses as much as digits as its factorization.

320052545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64010514.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 320052545 is about 17890.0124371114. The cubic root of 320052545 is about 684.0278144076.

The spelling of 320052545 in words is "three hundred twenty million, fifty-two thousand, five hundred forty-five".