55555106091 has 16 divisors (see below), whose sum is σ = 74778754176. Its totient is φ = 36684534656.

The previous prime is 55555106083. The next prime is 55555106119. The reversal of 55555106091 is 19060155555.

It is a cyclic number.

It is not a de Polignac number, because 55555106091 - 2³ = 55555106083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55555106011) 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, 462496 + ... + 570098.

It is an arithmetic number, because the mean of its divisors is an integer number (4673672136).

Almost surely, 2^55555106091 is an apocalyptic number.

55555106091 is a deficient number, since it is larger than the sum of its proper divisors (19223648085).

55555106091 is a wasteful number, since it uses less digits than its factorization.

55555106091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109242.

The product of its (nonzero) digits is 168750, while the sum is 42.

The spelling of 55555106091 in words is "fifty-five billion, five hundred fifty-five million, one hundred six thousand, ninety-one".