505223520 has 96 divisors (see below), whose sum is σ = 1660684032. Its totient is φ = 128865792.

The previous prime is 505223479. The next prime is 505223581. The reversal of 505223520 is 25322505.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×505223520² = 510501610322380800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11842 + ... + 33921.

It is an arithmetic number, because the mean of its divisors is an integer number (17298792).

Almost surely, 2^505223520 is an apocalyptic number.

It is an amenable number.

505223520 is an abundant number, since it is smaller than the sum of its proper divisors (1155460512).

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

505223520 is a wasteful number, since it uses less digits than its factorization.

505223520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45804 (or 45796 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 505223520 is about 22477.1777587846. The cubic root of 505223520 is about 796.4548968430.

The spelling of 505223520 in words is "five hundred five million, two hundred twenty-three thousand, five hundred twenty".