55128093 has 8 divisors (see below), whose sum is σ = 77827968. Its totient is φ = 34590144.

The previous prime is 55128091. The next prime is 55128131. The reversal of 55128093 is 39082155.

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

It is not a de Polignac number, because 55128093 - 2¹ = 55128091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55128091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540421 + ... + 540522.

It is an arithmetic number, because the mean of its divisors is an integer number (9728496).

Almost surely, 2^55128093 is an apocalyptic number.

It is an amenable number.

55128093 is a deficient number, since it is larger than the sum of its proper divisors (22699875).

55128093 is a wasteful number, since it uses less digits than its factorization.

55128093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080963.

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

The square root of 55128093 is about 7424.8294929917. The cubic root of 55128093 is about 380.5902484443.

The spelling of 55128093 in words is "fifty-five million, one hundred twenty-eight thousand, ninety-three".