49555128 has 64 divisors (see below), whose sum is σ = 142133760. Its totient is φ = 14103936.

The previous prime is 49555091. The next prime is 49555147. The reversal of 49555128 is 82155594.

49555128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×49555128² = 4911421422192768, which contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 66325 + ... + 67067.

It is an arithmetic number, because the mean of its divisors is an integer number (2220840).

Almost surely, 2^49555128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49555128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71066880).

49555128 is an abundant number, since it is smaller than the sum of its proper divisors (92578632).

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

49555128 is a wasteful number, since it uses less digits than its factorization.

49555128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156 (or 1152 counting only the distinct ones).

The product of its digits is 72000, while the sum is 39.

The square root of 49555128 is about 7039.5403259020. The cubic root of 49555128 is about 367.3072782846.

The spelling of 49555128 in words is "forty-nine million, five hundred fifty-five thousand, one hundred twenty-eight".