553321355221 has 16 divisors (see below), whose sum is σ = 612413163648. Its totient is φ = 497258150400.

The previous prime is 553321355219. The next prime is 553321355261. The reversal of 553321355221 is 122553123355.

It is a cyclic number.

It is not a de Polignac number, because 553321355221 - 2¹ = 553321355219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553321355261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1015920 + ... + 1462441.

It is an arithmetic number, because the mean of its divisors is an integer number (38275822728).

Almost surely, 2^553321355221 is an apocalyptic number.

It is an amenable number.

553321355221 is a deficient number, since it is larger than the sum of its proper divisors (59091808427).

553321355221 is a wasteful number, since it uses less digits than its factorization.

553321355221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2478972.

The product of its digits is 135000, while the sum is 37.

Adding to 553321355221 its reverse (122553123355), we get a palindrome (675874478576).

The spelling of 553321355221 in words is "five hundred fifty-three billion, three hundred twenty-one million, three hundred fifty-five thousand, two hundred twenty-one".