505444313 has 4 divisors (see below), whose sum is σ = 551393808. Its totient is φ = 459494820.

The previous prime is 505444307. The next prime is 505444319. The reversal of 505444313 is 313444505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (505444307) and next prime (505444319).

It is a cyclic number.

It is not a de Polignac number, because 505444313 - 2⁶ = 505444249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505444319) 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, 22974731 + ... + 22974752.

It is an arithmetic number, because the mean of its divisors is an integer number (137848452).

Almost surely, 2^505444313 is an apocalyptic number.

It is an amenable number.

505444313 is a deficient number, since it is larger than the sum of its proper divisors (45949495).

505444313 is a wasteful number, since it uses less digits than its factorization.

505444313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45949494.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 505444313 is about 22482.0887152417. The cubic root of 505444313 is about 796.5709022996.

Adding to 505444313 its reverse (313444505), we get a palindrome (818888818).

The spelling of 505444313 in words is "five hundred five million, four hundred forty-four thousand, three hundred thirteen".