505416224251 has 4 divisors (see below), whose sum is σ = 505417649472. Its totient is φ = 505414799032.

The previous prime is 505416224249. The next prime is 505416224279. The reversal of 505416224251 is 152422614505.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 505416224251 - 2¹ = 505416224249 is a prime.

It is a super-2 number, since 2×505416224251² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 505416224251.

It is not an unprimeable number, because it can be changed into a prime (505416224231) 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, 282870 + ... + 1044436.

It is an arithmetic number, because the mean of its divisors is an integer number (126354412368).

Almost surely, 2^505416224251 is an apocalyptic number.

505416224251 is a deficient number, since it is larger than the sum of its proper divisors (1425221).

505416224251 is an equidigital number, since it uses as much as digits as its factorization.

505416224251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425220.

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 505416224251 its reverse (152422614505), we get a palindrome (657838838756).

The spelling of 505416224251 in words is "five hundred five billion, four hundred sixteen million, two hundred twenty-four thousand, two hundred fifty-one".