505561512 has 16 divisors (see below), whose sum is σ = 1263903840. Its totient is φ = 168520496.

The previous prime is 505561499. The next prime is 505561513. The reversal of 505561512 is 215165505.

It is a super-2 number, since 2×505561512² = 511184884831452288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 505561512.

It is not an unprimeable number, because it can be changed into a prime (505561513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10532508 + ... + 10532555.

It is an arithmetic number, because the mean of its divisors is an integer number (78993990).

Almost surely, 2^505561512 is an apocalyptic number.

It is an amenable number.

505561512 is an abundant number, since it is smaller than the sum of its proper divisors (758342328).

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

505561512 is a wasteful number, since it uses less digits than its factorization.

505561512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21065072 (or 21065068 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 505561512 is about 22484.6950613078. The cubic root of 505561512 is about 796.6324653614.

The spelling of 505561512 in words is "five hundred five million, five hundred sixty-one thousand, five hundred twelve".