55117122 has 16 divisors (see below), whose sum is σ = 110369952. Its totient is φ = 18349760.

The previous prime is 55117031. The next prime is 55117123. The reversal of 55117122 is 22171155.

It is a junction number, because it is equal to n+sod(n) for n = 55117092 and 55117101.

It is not an unprimeable number, because it can be changed into a prime (55117123) 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, 73 + ... + 10499.

It is an arithmetic number, because the mean of its divisors is an integer number (6898122).

Almost surely, 2^55117122 is an apocalyptic number.

55117122 is an abundant number, since it is smaller than the sum of its proper divisors (55252830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55117122 is a wasteful number, since it uses less digits than its factorization.

55117122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11313.

The product of its digits is 700, while the sum is 24.

The square root of 55117122 is about 7424.0906513862. The cubic root of 55117122 is about 380.5649997771.

Adding to 55117122 its reverse (22171155), we get a palindrome (77288277).

The spelling of 55117122 in words is "fifty-five million, one hundred seventeen thousand, one hundred twenty-two".