505355245 has 4 divisors (see below), whose sum is σ = 606426300. Its totient is φ = 404284192.

The previous prime is 505355239. The next prime is 505355269. The reversal of 505355245 is 542553505.

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 301265449 + 204089796 = 17357^2 + 14286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505355245 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505355245.

It is a congruent number.

It is an unprimeable number.

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, 50535520 + ... + 50535529.

It is an arithmetic number, because the mean of its divisors is an integer number (151606575).

Almost surely, 2^505355245 is an apocalyptic number.

It is an amenable number.

505355245 is a deficient number, since it is larger than the sum of its proper divisors (101071055).

505355245 is a wasteful number, since it uses less digits than its factorization.

505355245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101071054.

The product of its (nonzero) digits is 75000, while the sum is 34.

The square root of 505355245 is about 22480.1077621972. The cubic root of 505355245 is about 796.5241097100.

The spelling of 505355245 in words is "five hundred five million, three hundred fifty-five thousand, two hundred forty-five".