505280957453 has 4 divisors (see below), whose sum is σ = 506250787068. Its totient is φ = 504311127840.

The previous prime is 505280957429. The next prime is 505280957483. The reversal of 505280957453 is 354759082505.

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

It can be written as a sum of positive squares in 2 ways, for example, as 328378279849 + 176902677604 = 573043^2 + 420598^2 .

It is a cyclic number.

It is not a de Polignac number, because 505280957453 - 2⁸ = 505280957197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505280957395 and 505280957404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505280957483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484914026 + ... + 484915067.

It is an arithmetic number, because the mean of its divisors is an integer number (126562696767).

Almost surely, 2^505280957453 is an apocalyptic number.

It is an amenable number.

505280957453 is a deficient number, since it is larger than the sum of its proper divisors (969829615).

505280957453 is an equidigital number, since it uses as much as digits as its factorization.

505280957453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969829614.

The product of its (nonzero) digits is 7560000, while the sum is 53.

The spelling of 505280957453 in words is "five hundred five billion, two hundred eighty million, nine hundred fifty-seven thousand, four hundred fifty-three".