55128158 has 8 divisors (see below), whose sum is σ = 87044520. Its totient is φ = 26113320.

The previous prime is 55128131. The next prime is 55128169. The reversal of 55128158 is 85182155.

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

It is a super-2 number, since 2×55128158² = 6078227608945928, which contains 22 as substring.

It is a Curzon number.

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, 725333 + ... + 725408.

It is an arithmetic number, because the mean of its divisors is an integer number (10880565).

Almost surely, 2^55128158 is an apocalyptic number.

55128158 is a deficient number, since it is larger than the sum of its proper divisors (31916362).

55128158 is a wasteful number, since it uses less digits than its factorization.

55128158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450762.

The product of its digits is 16000, while the sum is 35.

The square root of 55128158 is about 7424.8338701953. The cubic root of 55128158 is about 380.5903980254.

The spelling of 55128158 in words is "fifty-five million, one hundred twenty-eight thousand, one hundred fifty-eight".