321361552 has 10 divisors (see below), whose sum is σ = 622638038. Its totient is φ = 160680768.

The previous prime is 321361519. The next prime is 321361559. The reversal of 321361552 is 255163123.

It can be written as a sum of positive squares in only one way, i.e., 197796096 + 123565456 = 14064^2 + 11116^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 321361552.

It is not an unprimeable number, because it can be changed into a prime (321361559) 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 as a sum of consecutive naturals, namely, 10042533 + ... + 10042564.

Almost surely, 2^321361552 is an apocalyptic number.

It is an amenable number.

321361552 is a deficient number, since it is larger than the sum of its proper divisors (301276486).

321361552 is a wasteful number, since it uses less digits than its factorization.

321361552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20085105 (or 20085099 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 321361552 is about 17926.5599600146. The cubic root of 321361552 is about 684.9590982025.

The spelling of 321361552 in words is "three hundred twenty-one million, three hundred sixty-one thousand, five hundred fifty-two".