505100550 has 48 divisors (see below), whose sum is σ = 1264182480. Its totient is φ = 133453440.

The previous prime is 505100521. The next prime is 505100599. The reversal of 505100550 is 55001505.

It is a super-2 number, since 2×505100550² = 510253131220605000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 904 + ... + 31796.

It is an arithmetic number, because the mean of its divisors is an integer number (26337135).

Almost surely, 2^505100550 is an apocalyptic number.

505100550 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 505100550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (632091240).

505100550 is an abundant number, since it is smaller than the sum of its proper divisors (759081930).

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

505100550 is a wasteful number, since it uses less digits than its factorization.

505100550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31017 (or 31012 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 21.

The square root of 505100550 is about 22474.4421510301. The cubic root of 505100550 is about 796.3902732972.

The spelling of 505100550 in words is "five hundred five million, one hundred thousand, five hundred fifty".