55128562 has 8 divisors (see below), whose sum is σ = 86288256. Its totient is φ = 26365812.

The previous prime is 55128553. The next prime is 55128581. The reversal of 55128562 is 26582155.

55128562 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 an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 599178 + ... + 599269.

It is an arithmetic number, because the mean of its divisors is an integer number (10786032).

Almost surely, 2^55128562 is an apocalyptic number.

55128562 is a deficient number, since it is larger than the sum of its proper divisors (31159694).

55128562 is a wasteful number, since it uses less digits than its factorization.

55128562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198472.

The product of its digits is 24000, while the sum is 34.

The square root of 55128562 is about 7424.8610761414. The cubic root of 55128562 is about 380.5913277266.

The spelling of 55128562 in words is "fifty-five million, one hundred twenty-eight thousand, five hundred sixty-two".