505123531252 has 12 divisors (see below), whose sum is σ = 884083640580. Its totient is φ = 252528205376.

The previous prime is 505123531223. The next prime is 505123531267. The reversal of 505123531252 is 252135321505.

It can be written as a sum of positive squares in 2 ways, for example, as 93198320656 + 411925210596 = 305284^2 + 641814^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8356183 + ... + 8416414.

It is an arithmetic number, because the mean of its divisors is an integer number (73673636715).

Almost surely, 2^505123531252 is an apocalyptic number.

It is an amenable number.

505123531252 is a deficient number, since it is larger than the sum of its proper divisors (378960109328).

505123531252 is a wasteful number, since it uses less digits than its factorization.

505123531252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16780130 (or 16780128 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 34.

Adding to 505123531252 its reverse (252135321505), we get a palindrome (757258852757).

The spelling of 505123531252 in words is "five hundred five billion, one hundred twenty-three million, five hundred thirty-one thousand, two hundred fifty-two".