505224831 has 16 divisors (see below), whose sum is σ = 704070144. Its totient is φ = 321645984.

The previous prime is 505224827. The next prime is 505224859. The reversal of 505224831 is 138422505.

It is not a de Polignac number, because 505224831 - 2² = 505224827 is a prime.

It is a super-2 number, since 2×505224831² = 510504259717957122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505224871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38985 + ... + 50301.

It is an arithmetic number, because the mean of its divisors is an integer number (44004384).

Almost surely, 2^505224831 is an apocalyptic number.

505224831 is a deficient number, since it is larger than the sum of its proper divisors (198845313).

505224831 is a wasteful number, since it uses less digits than its factorization.

505224831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11990.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 505224831 is about 22477.2069216796. The cubic root of 505224831 is about 796.4555857470.

The spelling of 505224831 in words is "five hundred five million, two hundred twenty-four thousand, eight hundred thirty-one".