505285500 has 48 divisors (see below), whose sum is σ = 1471395744. Its totient is φ = 134742400.

The previous prime is 505285481. The next prime is 505285507. The reversal of 505285500 is 5582505.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505285507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166929 + ... + 169928.

It is an arithmetic number, because the mean of its divisors is an integer number (30654078).

Almost surely, 2^505285500 is an apocalyptic number.

505285500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

505285500 is an abundant number, since it is smaller than the sum of its proper divisors (966110244).

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

505285500 is a wasteful number, since it uses less digits than its factorization.

505285500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336879 (or 336867 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 505285500 is about 22478.5564483131. The cubic root of 505285500 is about 796.4874647752.

The spelling of 505285500 in words is "five hundred five million, two hundred eighty-five thousand, five hundred".