320552 has 16 divisors (see below), whose sum is σ = 636660. Its totient is φ = 150784.

The previous prime is 320539. The next prime is 320561. The reversal of 320552 is 255023.

It can be written as a sum of positive squares in 2 ways, for example, as 320356 + 196 = 566^2 + 14^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 320552.

It is an unprimeable number.

320552 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1043 + ... + 1314.

2³²⁰⁵⁵² is an apocalyptic number.

It is an amenable number.

320552 is a deficient number, since it is larger than the sum of its proper divisors (316108).

320552 is a wasteful number, since it uses less digits than its factorization.

320552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380 (or 2376 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 320552 is about 566.1731184011. The cubic root of 320552 is about 68.4383447211.

Adding to 320552 its reverse (255023), we get a palindrome (575575).

The spelling of 320552 in words is "three hundred twenty thousand, five hundred fifty-two".