55111054223 has 4 divisors (see below), whose sum is σ = 58352880960. Its totient is φ = 51869227488.

The previous prime is 55111054213. The next prime is 55111054231. The reversal of 55111054223 is 32245011155.

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 55111054223 - 2²² = 55106859919 is a prime.

It is a super-2 number, since 2×55111054223² (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 (55111054213) 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, 1620913343 + ... + 1620913376.

It is an arithmetic number, because the mean of its divisors is an integer number (14588220240).

Almost surely, 2^55111054223 is an apocalyptic number.

55111054223 is a deficient number, since it is larger than the sum of its proper divisors (3241826737).

55111054223 is a wasteful number, since it uses less digits than its factorization.

55111054223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3241826736.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 55111054223 its reverse (32245011155), we get a palindrome (87356065378).

The spelling of 55111054223 in words is "fifty-five billion, one hundred eleven million, fifty-four thousand, two hundred twenty-three".