505301383 has 4 divisors (see below), whose sum is σ = 506474208. Its totient is φ = 504128560.

The previous prime is 505301339. The next prime is 505301389. The reversal of 505301383 is 383103505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 383103505 = 5 ⋅76620701.

It is a cyclic number.

It is not a de Polignac number, because 505301383 - 2⁹ = 505300871 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 (505301389) 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, 585766 + ... + 586627.

It is an arithmetic number, because the mean of its divisors is an integer number (126618552).

Almost surely, 2^505301383 is an apocalyptic number.

505301383 is a deficient number, since it is larger than the sum of its proper divisors (1172825).

505301383 is a wasteful number, since it uses less digits than its factorization.

505301383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172824.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 505301383 is about 22478.9097377964. The cubic root of 505301383 is about 796.4958102076.

Adding to 505301383 its reverse (383103505), we get a palindrome (888404888).

The spelling of 505301383 in words is "five hundred five million, three hundred one thousand, three hundred eighty-three".