565505000 has 80 divisors (see below), whose sum is σ = 1403128980. Its totient is φ = 212864000.

The previous prime is 565504993. The next prime is 565505011. The reversal of 565505000 is 505565.

It can be written as a sum of positive squares in 10 ways, for example, as 107288164 + 458216836 = 10358^2 + 21406^2 .

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, 81674 + ... + 88326.

Almost surely, 2^565505000 is an apocalyptic number.

565505000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 565505000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (701564490).

565505000 is an abundant number, since it is smaller than the sum of its proper divisors (837623980).

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

565505000 is a wasteful number, since it uses less digits than its factorization.

565505000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6696 (or 6677 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 565505000 is about 23780.3490302392. The cubic root of 565505000 is about 826.9491714249.

The spelling of 565505000 in words is "five hundred sixty-five million, five hundred five thousand".