505352342251 has 4 divisors (see below), whose sum is σ = 505649785000. Its totient is φ = 505054899504.

The previous prime is 505352342221. The next prime is 505352342267. The reversal of 505352342251 is 152243253505.

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 505352342251 - 2²³ = 505343953643 is a prime.

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 505352342251.

It is not an unprimeable number, because it can be changed into a prime (505352342221) 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, 148718826 + ... + 148722223.

It is an arithmetic number, because the mean of its divisors is an integer number (126412446250).

Almost surely, 2^505352342251 is an apocalyptic number.

505352342251 is a deficient number, since it is larger than the sum of its proper divisors (297442749).

505352342251 is a wasteful number, since it uses less digits than its factorization.

505352342251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297442748.

The product of its (nonzero) digits is 180000, while the sum is 37.

Adding to 505352342251 its reverse (152243253505), we get a palindrome (657595595756).

The spelling of 505352342251 in words is "five hundred five billion, three hundred fifty-two million, three hundred forty-two thousand, two hundred fifty-one".