55211117 has 6 divisors (see below), whose sum is σ = 59785002. Its totient is φ = 50963952.

The previous prime is 55211111. The next prime is 55211153. The reversal of 55211117 is 71111255.

It can be written as a sum of positive squares in 3 ways, for example, as 139876 + 55071241 = 374^2 + 7421^2 .

It is not a de Polignac number, because 55211117 - 2⁸ = 55210861 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55211092 and 55211101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55211111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 163178 + ... + 163515.

It is an arithmetic number, because the mean of its divisors is an integer number (9964167).

Almost surely, 2^55211117 is an apocalyptic number.

It is an amenable number.

55211117 is a deficient number, since it is larger than the sum of its proper divisors (4573885).

55211117 is a wasteful number, since it uses less digits than its factorization.

55211117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326719 (or 326706 counting only the distinct ones).

The product of its digits is 350, while the sum is 23.

The square root of 55211117 is about 7430.4183596888. The cubic root of 55211117 is about 380.7812114293.

The spelling of 55211117 in words is "fifty-five million, two hundred eleven thousand, one hundred seventeen".