55321345511 has 4 divisors (see below), whose sum is σ = 55324375224. Its totient is φ = 55318315800.

The previous prime is 55321345501. The next prime is 55321345531. The reversal of 55321345511 is 11554312355.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11554312355 = 5 ⋅2310862471.

It is a cyclic number.

It is not a de Polignac number, because 55321345511 - 2¹⁰ = 55321344487 is a prime.

It is a super-2 number, since 2×55321345511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55321345501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1487300 + ... + 1524041.

It is an arithmetic number, because the mean of its divisors is an integer number (13831093806).

Almost surely, 2^55321345511 is an apocalyptic number.

55321345511 is a deficient number, since it is larger than the sum of its proper divisors (3029713).

55321345511 is a wasteful number, since it uses less digits than its factorization.

55321345511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3029712.

The product of its digits is 45000, while the sum is 35.

Adding to 55321345511 its reverse (11554312355), we get a palindrome (66875657866).

The spelling of 55321345511 in words is "fifty-five billion, three hundred twenty-one million, three hundred forty-five thousand, five hundred eleven".