55028897 has 16 divisors (see below), whose sum is σ = 68786304. Its totient is φ = 42768000.

The previous prime is 55028891. The next prime is 55028947. The reversal of 55028897 is 79882055.

55028897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55028897 - 2¹⁶ = 54963361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55028891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40997 + ... + 42317.

It is an arithmetic number, because the mean of its divisors is an integer number (4299144).

Almost surely, 2^55028897 is an apocalyptic number.

It is an amenable number.

55028897 is a deficient number, since it is larger than the sum of its proper divisors (13757407).

55028897 is a wasteful number, since it uses less digits than its factorization.

55028897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880.

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 55028897 is about 7418.1464666047. The cubic root of 55028897 is about 380.3618367893.

The spelling of 55028897 in words is "fifty-five million, twenty-eight thousand, eight hundred ninety-seven".