505302775253 has 4 divisors (see below), whose sum is σ = 517627233228. Its totient is φ = 492978317280.

The previous prime is 505302775247. The next prime is 505302775259. The reversal of 505302775253 is 352577203505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 352577203505 = 5 ⋅70515440701.

It is an interprime number because it is at equal distance from previous prime (505302775247) and next prime (505302775259).

It can be written as a sum of positive squares in 2 ways, for example, as 70022156689 + 435280618564 = 264617^2 + 659758^2 .

It is a cyclic number.

It is not a de Polignac number, because 505302775253 - 2⁶ = 505302775189 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 (505302775259) 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, 6162228926 + ... + 6162229007.

It is an arithmetic number, because the mean of its divisors is an integer number (129406808307).

Almost surely, 2^505302775253 is an apocalyptic number.

It is an amenable number.

505302775253 is a deficient number, since it is larger than the sum of its proper divisors (12324457975).

505302775253 is a wasteful number, since it uses less digits than its factorization.

505302775253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12324457974.

The product of its (nonzero) digits is 1102500, while the sum is 44.

Adding to 505302775253 its reverse (352577203505), we get a palindrome (857879978758).

The spelling of 505302775253 in words is "five hundred five billion, three hundred two million, seven hundred seventy-five thousand, two hundred fifty-three".