505220535 has 48 divisors (see below), whose sum is σ = 941162976. Its totient is φ = 249790464.

The previous prime is 505220489. The next prime is 505220557. The reversal of 505220535 is 535022505.

It is not a de Polignac number, because 505220535 - 2¹⁰ = 505219511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505220499 and 505220508.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 46327 + ... + 56183.

It is an arithmetic number, because the mean of its divisors is an integer number (19607562).

Almost surely, 2^505220535 is an apocalyptic number.

505220535 is a deficient number, since it is larger than the sum of its proper divisors (435942441).

505220535 is a wasteful number, since it uses less digits than its factorization.

505220535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9952 (or 9949 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 505220535 is about 22477.1113580015. Note that the first 3 decimals coincide. The cubic root of 505220535 is about 796.4533282815.

The spelling of 505220535 in words is "five hundred five million, two hundred twenty thousand, five hundred thirty-five".