55711232211 has 4 divisors (see below), whose sum is σ = 74281642952. Its totient is φ = 37140821472.

The previous prime is 55711232191. The next prime is 55711232237. The reversal of 55711232211 is 11223211755.

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

It is not a de Polignac number, because 55711232211 - 2¹⁴ = 55711215827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55711232911) 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, 9285205366 + ... + 9285205371.

It is an arithmetic number, because the mean of its divisors is an integer number (18570410738).

Almost surely, 2^55711232211 is an apocalyptic number.

55711232211 is a deficient number, since it is larger than the sum of its proper divisors (18570410741).

55711232211 is a wasteful number, since it uses less digits than its factorization.

55711232211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18570410740.

The product of its digits is 4200, while the sum is 30.

Adding to 55711232211 its reverse (11223211755), we get a palindrome (66934443966).

The spelling of 55711232211 in words is "fifty-five billion, seven hundred eleven million, two hundred thirty-two thousand, two hundred eleven".