55128126 has 8 divisors (see below), whose sum is σ = 110256264. Its totient is φ = 18376040.

The previous prime is 55128091. The next prime is 55128131. The reversal of 55128126 is 62182155.

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

55128126 is an admirable number.

It is a super-2 number, since 2×55128126² = 6078220552543752, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55128093 and 55128102.

It is a congruent number.

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, 4594005 + ... + 4594016.

It is an arithmetic number, because the mean of its divisors is an integer number (13782033).

Almost surely, 2^55128126 is an apocalyptic number.

55128126 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55128126 is a wasteful number, since it uses less digits than its factorization.

55128126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9188026.

The product of its digits is 4800, while the sum is 30.

The square root of 55128126 is about 7424.8317152647. The cubic root of 55128126 is about 380.5903243855.

The spelling of 55128126 in words is "fifty-five million, one hundred twenty-eight thousand, one hundred twenty-six".