55511532211 has 4 divisors (see below), whose sum is σ = 55528791112. Its totient is φ = 55494273312.

The previous prime is 55511532173. The next prime is 55511532247. The reversal of 55511532211 is 11223511555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55511532211 - 2¹⁷ = 55511401139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55511532511) 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, 8624625 + ... + 8631058.

It is an arithmetic number, because the mean of its divisors is an integer number (13882197778).

Almost surely, 2^55511532211 is an apocalyptic number.

55511532211 is a deficient number, since it is larger than the sum of its proper divisors (17258901).

55511532211 is a wasteful number, since it uses less digits than its factorization.

55511532211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17258900.

The product of its digits is 7500, while the sum is 31.

The spelling of 55511532211 in words is "fifty-five billion, five hundred eleven million, five hundred thirty-two thousand, two hundred eleven".