321041552 has 40 divisors (see below), whose sum is σ = 679331520. Its totient is φ = 146079360.

The previous prime is 321041551. The next prime is 321041561. The reversal of 321041552 is 255140123.

It is a super-2 number, since 2×321041552² = 206135356221137408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321041551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3899 + ... + 25637.

It is an arithmetic number, because the mean of its divisors is an integer number (16983288).

Almost surely, 2^321041552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321041552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339665760).

321041552 is an abundant number, since it is smaller than the sum of its proper divisors (358289968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321041552 is a wasteful number, since it uses less digits than its factorization.

321041552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21831 (or 21825 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 321041552 is about 17917.6324328858. The cubic root of 321041552 is about 684.7316703484.

Adding to 321041552 its reverse (255140123), we get a palindrome (576181675).

The spelling of 321041552 in words is "three hundred twenty-one million, forty-one thousand, five hundred fifty-two".