55220124 has 12 divisors (see below), whose sum is σ = 128846984. Its totient is φ = 18406704.

The previous prime is 55220107. The next prime is 55220141. The reversal of 55220124 is 42102255.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55220107) and next prime (55220141).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 55220124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2300827 + ... + 2300850.

Almost surely, 2^55220124 is an apocalyptic number.

It is an amenable number.

55220124 is an abundant number, since it is smaller than the sum of its proper divisors (73626860).

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

55220124 is a wasteful number, since it uses less digits than its factorization.

55220124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4601684 (or 4601682 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 55220124 is about 7431.0244246672. The cubic root of 55220124 is about 380.8019168600.

Adding to 55220124 its reverse (42102255), we get a palindrome (97322379).

The spelling of 55220124 in words is "fifty-five million, two hundred twenty thousand, one hundred twenty-four".