55022122 has 16 divisors (see below), whose sum is σ = 84137472. Its totient is φ = 26979120.

The previous prime is 55022113. The next prime is 55022129. The reversal of 55022122 is 22122055.

It is a self number, because there is not a number n which added to its sum of digits gives 55022122.

It is not an unprimeable number, because it can be changed into a prime (55022129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73683 + ... + 74425.

It is an arithmetic number, because the mean of its divisors is an integer number (5258592).

Almost surely, 2^55022122 is an apocalyptic number.

55022122 is a deficient number, since it is larger than the sum of its proper divisors (29115350).

55022122 is a wasteful number, since it uses less digits than its factorization.

55022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 55022122 is about 7417.6898020880. The cubic root of 55022122 is about 380.3462264625.

Adding to 55022122 its reverse (22122055), we get a palindrome (77144177).

The spelling of 55022122 in words is "fifty-five million, twenty-two thousand, one hundred twenty-two".