55022211 has 6 divisors (see below), whose sum is σ = 79476540. Its totient is φ = 36681468.

The previous prime is 55022189. The next prime is 55022213. The reversal of 55022211 is 11222055.

It is not a de Polignac number, because 55022211 - 2⁶ = 55022147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55022213) 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, 3056781 + ... + 3056798.

It is an arithmetic number, because the mean of its divisors is an integer number (13246090).

Almost surely, 2^55022211 is an apocalyptic number.

55022211 is a deficient number, since it is larger than the sum of its proper divisors (24454329).

55022211 is a wasteful number, since it uses less digits than its factorization.

55022211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6113585 (or 6113582 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 55022211 is about 7417.6958012580. The cubic root of 55022211 is about 380.3464315363.

Adding to 55022211 its reverse (11222055), we get a palindrome (66244266).

The spelling of 55022211 in words is "fifty-five million, twenty-two thousand, two hundred eleven".