55323313111021 has 8 divisors (see below), whose sum is σ = 55515045995640. Its totient is φ = 55131600064512.

The previous prime is 55323313110943. The next prime is 55323313111037. The reversal of 55323313111021 is 12011131332355.

It can be written as a sum of positive squares in 4 ways, for example, as 5154579936900 + 50168733174121 = 2270370^2 + 7082989^2 .

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 55323313111021 - 2⁷ = 55323313110893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55323313111061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638545 + ... + 10538233.

It is an arithmetic number, because the mean of its divisors is an integer number (6939380749455).

Almost surely, 2^{55323313111021} is an apocalyptic number.

It is an amenable number.

55323313111021 is a deficient number, since it is larger than the sum of its proper divisors (191732884619).

55323313111021 is a wasteful number, since it uses less digits than its factorization.

55323313111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9919055.

The product of its (nonzero) digits is 8100, while the sum is 31.

Adding to 55323313111021 its reverse (12011131332355), we get a palindrome (67334444443376).

The spelling of 55323313111021 in words is "fifty-five trillion, three hundred twenty-three billion, three hundred thirteen million, one hundred eleven thousand, twenty-one".