505530513 has 24 divisors (see below), whose sum is σ = 774379008. Its totient is φ = 316697472.

The previous prime is 505530503. The next prime is 505530527. The reversal of 505530513 is 315035505.

It is not a de Polignac number, because 505530513 - 2⁵ = 505530481 is a prime.

It is a super-2 number, since 2×505530513² = 511122199148086338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (505530503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111456 + ... + 115902.

It is an arithmetic number, because the mean of its divisors is an integer number (32265792).

Almost surely, 2^505530513 is an apocalyptic number.

It is an amenable number.

505530513 is a deficient number, since it is larger than the sum of its proper divisors (268848495).

505530513 is a wasteful number, since it uses less digits than its factorization.

505530513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5213 (or 5210 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 27.

The square root of 505530513 is about 22484.0057151745. The cubic root of 505530513 is about 796.6161829283.

The spelling of 505530513 in words is "five hundred five million, five hundred thirty thousand, five hundred thirteen".