55320055311 has 16 divisors (see below), whose sum is σ = 74342268000. Its totient is φ = 36589521408.

The previous prime is 55320055279. The next prime is 55320055361. The reversal of 55320055311 is 11355002355.

It is not a de Polignac number, because 55320055311 - 2⁵ = 55320055279 is a prime.

It is a super-2 number, since 2×55320055311² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55320055361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310875 + ... + 455283.

It is an arithmetic number, because the mean of its divisors is an integer number (4646391750).

Almost surely, 2^55320055311 is an apocalyptic number.

55320055311 is a deficient number, since it is larger than the sum of its proper divisors (19022212689).

55320055311 is a wasteful number, since it uses less digits than its factorization.

55320055311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145418.

The product of its (nonzero) digits is 11250, while the sum is 30.

Adding to 55320055311 its reverse (11355002355), we get a palindrome (66675057666).

The spelling of 55320055311 in words is "fifty-five billion, three hundred twenty million, fifty-five thousand, three hundred eleven".