505513351 has 12 divisors (see below), whose sum is σ = 603941448. Its totient is φ = 421584912.

The previous prime is 505513339. The next prime is 505513361. The reversal of 505513351 is 153315505.

It is not a de Polignac number, because 505513351 - 2⁵ = 505513319 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 (505513321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137601 + ... + 141226.

It is an arithmetic number, because the mean of its divisors is an integer number (50328454).

Almost surely, 2^505513351 is an apocalyptic number.

505513351 is a deficient number, since it is larger than the sum of its proper divisors (98428097).

505513351 is a wasteful number, since it uses less digits than its factorization.

505513351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278878 (or 278871 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 28.

The square root of 505513351 is about 22483.6240628596. The cubic root of 505513351 is about 796.6071681862.

Adding to 505513351 its reverse (153315505), we get a palindrome (658828856).

The spelling of 505513351 in words is "five hundred five million, five hundred thirteen thousand, three hundred fifty-one".