505505830 has 16 divisors (see below), whose sum is σ = 957800880. Its totient is φ = 191560032.

The previous prime is 505505711. The next prime is 505505831. The reversal of 505505830 is 38505505.

It is a super-2 number, since 2×505505830² = 511072288327977800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 505505792 and 505505801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505505831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1330089 + ... + 1330468.

It is an arithmetic number, because the mean of its divisors is an integer number (59862555).

Almost surely, 2^505505830 is an apocalyptic number.

505505830 is a deficient number, since it is larger than the sum of its proper divisors (452295050).

505505830 is a wasteful number, since it uses less digits than its factorization.

505505830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2660583.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 505505830 is about 22483.4568071727. The cubic root of 505505830 is about 796.6032175406.

The spelling of 505505830 in words is "five hundred five million, five hundred five thousand, eight hundred thirty".