55505050028 has 24 divisors (see below), whose sum is σ = 100904426784. Its totient is φ = 26694281600.

The previous prime is 55505050021. The next prime is 55505050039. The reversal of 55505050028 is 82005050555.

It is a happy number.

It is a super-2 number, since 2×55505050028² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55505050028.

It is not an unprimeable number, because it can be changed into a prime (55505050021) 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, 2371775 + ... + 2395062.

It is an arithmetic number, because the mean of its divisors is an integer number (4204351116).

Almost surely, 2^55505050028 is an apocalyptic number.

It is an amenable number.

55505050028 is a deficient number, since it is larger than the sum of its proper divisors (45399376756).

55505050028 is a wasteful number, since it uses less digits than its factorization.

55505050028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4766953 (or 4766951 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 35.

The spelling of 55505050028 in words is "fifty-five billion, five hundred five million, fifty thousand, twenty-eight".