55210122 has 36 divisors (see below), whose sum is σ = 131490450. Its totient is φ = 16729680.

The previous prime is 55210091. The next prime is 55210123. The reversal of 55210122 is 22101255.

It can be written as a sum of positive squares in only one way, i.e., 49406841 + 5803281 = 7029^2 + 2409^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 55210095 and 55210104.

It is not an unprimeable number, because it can be changed into a prime (55210123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10497 + ... + 14852.

Almost surely, 2^55210122 is an apocalyptic number.

55210122 is an abundant number, since it is smaller than the sum of its proper divisors (76280328).

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

55210122 is a wasteful number, since it uses less digits than its factorization.

55210122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25379 (or 25365 counting only the distinct ones).

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

The square root of 55210122 is about 7430.3514048799. The cubic root of 55210122 is about 380.7789239698.

Adding to 55210122 its reverse (22101255), we get a palindrome (77311377).

The spelling of 55210122 in words is "fifty-five million, two hundred ten thousand, one hundred twenty-two".