55111054191 has 16 divisors (see below), whose sum is σ = 76043612160. Its totient is φ = 35460545120.

The previous prime is 55111054157. The next prime is 55111054213. The reversal of 55111054191 is 19145011155.

It is a cyclic number.

It is not a de Polignac number, because 55111054191 - 2⁶ = 55111054127 is a prime.

It is a super-3 number, since 3×55111054191³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55111054391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119026 + ... + 352688.

It is an arithmetic number, because the mean of its divisors is an integer number (4752725760).

Almost surely, 2^55111054191 is an apocalyptic number.

55111054191 is a deficient number, since it is larger than the sum of its proper divisors (20932557969).

55111054191 is a wasteful number, since it uses less digits than its factorization.

55111054191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236406.

The product of its (nonzero) digits is 4500, while the sum is 33.

The spelling of 55111054191 in words is "fifty-five billion, one hundred eleven million, fifty-four thousand, one hundred ninety-one".