55257876 has 60 divisors (see below), whose sum is σ = 149461620. Its totient is φ = 17781120.

The previous prime is 55257869. The next prime is 55257889. The reversal of 55257876 is 67875255.

55257876 is a `hidden beast` number, since 5 + 5 + 2 + 578 + 76 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 38118276 + 17139600 = 6174^2 + 4140^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6456 + ... + 12336.

It is an arithmetic number, because the mean of its divisors is an integer number (2491027).

Almost surely, 2^55257876 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 55257876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74730810).

55257876 is an abundant number, since it is smaller than the sum of its proper divisors (94203744).

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

55257876 is a wasteful number, since it uses less digits than its factorization.

55257876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5926 (or 5915 counting only the distinct ones).

The product of its digits is 588000, while the sum is 45.

The square root of 55257876 is about 7433.5641518722. The cubic root of 55257876 is about 380.8886772537. Note that the first 3 decimals are identical.

The spelling of 55257876 in words is "fifty-five million, two hundred fifty-seven thousand, eight hundred seventy-six".