505352304251 has 4 divisors (see below), whose sum is σ = 505587026472. Its totient is φ = 505117582032.

The previous prime is 505352304241. The next prime is 505352304311. The reversal of 505352304251 is 152403253505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 505352304251 - 2³⁴ = 488172435067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505352304211) 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, 117357881 + ... + 117362186.

It is an arithmetic number, because the mean of its divisors is an integer number (126396756618).

Almost surely, 2^505352304251 is an apocalyptic number.

505352304251 is a deficient number, since it is larger than the sum of its proper divisors (234722221).

505352304251 is a wasteful number, since it uses less digits than its factorization.

505352304251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234722220.

The product of its (nonzero) digits is 90000, while the sum is 35.

Adding to 505352304251 its reverse (152403253505), we get a palindrome (657755557756).

The spelling of 505352304251 in words is "five hundred five billion, three hundred fifty-two million, three hundred four thousand, two hundred fifty-one".