321054445553 has 8 divisors (see below), whose sum is σ = 329111451816. Its totient is φ = 313008220800.

The previous prime is 321054445511. The next prime is 321054445609. The reversal of 321054445553 is 355544450123.

It can be written as a sum of positive squares in 4 ways, for example, as 118331184049 + 202723261504 = 343993^2 + 450248^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 321054445553 - 2⁸ = 321054445297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 321054445553.

It is not an unprimeable number, because it can be changed into a prime (321054415553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2635058 + ... + 2754203.

It is an arithmetic number, because the mean of its divisors is an integer number (41138931477).

Almost surely, 2^321054445553 is an apocalyptic number.

It is an amenable number.

321054445553 is a deficient number, since it is larger than the sum of its proper divisors (8057006263).

321054445553 is a wasteful number, since it uses less digits than its factorization.

321054445553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5390755.

The product of its (nonzero) digits is 720000, while the sum is 41.

Adding to 321054445553 its reverse (355544450123), we get a palindrome (676598895676).

The spelling of 321054445553 in words is "three hundred twenty-one billion, fifty-four million, four hundred forty-five thousand, five hundred fifty-three".