505000558253 has 4 divisors (see below), whose sum is σ = 526957104288. Its totient is φ = 483044012220.

The previous prime is 505000558243. The next prime is 505000558319. The reversal of 505000558253 is 352855000505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 505000558253 - 2¹⁸ = 505000296109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505000558243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10978272983 + ... + 10978273028.

It is an arithmetic number, because the mean of its divisors is an integer number (131739276072).

Almost surely, 2^505000558253 is an apocalyptic number.

It is an amenable number.

505000558253 is a deficient number, since it is larger than the sum of its proper divisors (21956546035).

505000558253 is a wasteful number, since it uses less digits than its factorization.

505000558253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21956546034.

The product of its (nonzero) digits is 150000, while the sum is 38.

Adding to 505000558253 its reverse (352855000505), we get a palindrome (857855558758).

The spelling of 505000558253 in words is "five hundred five billion, five hundred fifty-eight thousand, two hundred fifty-three".