55328019 has 8 divisors (see below), whose sum is σ = 77653440. Its totient is φ = 34943976.

The previous prime is 55327999. The next prime is 55328023. The reversal of 55328019 is 91082355.

55328019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55328019 - 2⁷ = 55327891 is a prime.

It is a super-2 number, since 2×55328019² = 6122379372928722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55328029) 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 7 ways as a sum of consecutive naturals, for example, 485277 + ... + 485390.

It is an arithmetic number, because the mean of its divisors is an integer number (9706680).

Almost surely, 2^55328019 is an apocalyptic number.

55328019 is a deficient number, since it is larger than the sum of its proper divisors (22325421).

55328019 is a wasteful number, since it uses less digits than its factorization.

55328019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970689.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 55328019 is about 7438.2806481068. The cubic root of 55328019 is about 381.0497727082.

The spelling of 55328019 in words is "fifty-five million, three hundred twenty-eight thousand, nineteen".