55553028 has 12 divisors (see below), whose sum is σ = 129623760. Its totient is φ = 18517672.

The previous prime is 55552993. The next prime is 55553053. The reversal of 55553028 is 82035555.

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

It is a super-3 number, since 3×55553028³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 55553028.

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, 2314698 + ... + 2314721.

It is an arithmetic number, because the mean of its divisors is an integer number (10801980).

Almost surely, 2^55553028 is an apocalyptic number.

It is an amenable number.

55553028 is an abundant number, since it is smaller than the sum of its proper divisors (74070732).

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

55553028 is a wasteful number, since it uses less digits than its factorization.

55553028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4629426 (or 4629424 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The square root of 55553028 is about 7453.3903694896. The cubic root of 55553028 is about 381.5656274390.

The spelling of 55553028 in words is "fifty-five million, five hundred fifty-three thousand, twenty-eight".