55280250 has 96 divisors (see below), whose sum is σ = 151856640. Its totient is φ = 14508000.

The previous prime is 55280221. The next prime is 55280261. The reversal of 55280250 is 5208255.

55280250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 47 ways as a sum of consecutive naturals, for example, 177595 + ... + 177905.

It is an arithmetic number, because the mean of its divisors is an integer number (1581840).

Almost surely, 2^55280250 is an apocalyptic number.

55280250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55280250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75928320).

55280250 is an abundant number, since it is smaller than the sum of its proper divisors (96576390).

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

55280250 is a wasteful number, since it uses less digits than its factorization.

55280250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 55280250 is about 7435.0689304135. The cubic root of 55280250 is about 380.9400777897.

The spelling of 55280250 in words is "fifty-five million, two hundred eighty thousand, two hundred fifty".