505605020 has 24 divisors (see below), whose sum is σ = 1063822704. Its totient is φ = 201851136.

The previous prime is 505605017. The next prime is 505605059. The reversal of 505605020 is 20506505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13709 + ... + 34628.

It is an arithmetic number, because the mean of its divisors is an integer number (44325946).

Almost surely, 2^505605020 is an apocalyptic number.

It is an amenable number.

505605020 is an abundant number, since it is smaller than the sum of its proper divisors (558217684).

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

505605020 is a wasteful number, since it uses less digits than its factorization.

505605020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48869 (or 48867 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 505605020 is about 22485.6625430517. The cubic root of 505605020 is about 796.6553171083.

The spelling of 505605020 in words is "five hundred five million, six hundred five thousand, twenty".