505401530 has 32 divisors (see below), whose sum is σ = 920937600. Its totient is φ = 199684800.

The previous prime is 505401529. The next prime is 505401599. The reversal of 505401530 is 35104505.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 505401496 and 505401505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296621 + ... + 298319.

It is an arithmetic number, because the mean of its divisors is an integer number (28779300).

Almost surely, 2^505401530 is an apocalyptic number.

505401530 is a deficient number, since it is larger than the sum of its proper divisors (415536070).

505401530 is a wasteful number, since it uses less digits than its factorization.

505401530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054.

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

The square root of 505401530 is about 22481.1372043320. The cubic root of 505401530 is about 796.5484265928.

The spelling of 505401530 in words is "five hundred five million, four hundred one thousand, five hundred thirty".