500255550 has 144 divisors (see below), whose sum is σ = 1394160768. Its totient is φ = 128520000.

The previous prime is 500255527. The next prime is 500255551. The reversal of 500255550 is 55552005.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500255551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1992925 + ... + 1993175.

It is an arithmetic number, because the mean of its divisors is an integer number (9681672).

Almost surely, 2^500255550 is an apocalyptic number.

500255550 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 500255550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (697080384).

500255550 is an abundant number, since it is smaller than the sum of its proper divisors (893905218).

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

500255550 is a wasteful number, since it uses less digits than its factorization.

500255550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 27.

The square root of 500255550 is about 22366.3933167599. The cubic root of 500255550 is about 793.8357230666.

The spelling of 500255550 in words is "five hundred million, two hundred fifty-five thousand, five hundred fifty".