505513345 has 8 divisors (see below), whose sum is σ = 607083840. Its totient is φ = 404098800.

The previous prime is 505513339. The next prime is 505513361. The reversal of 505513345 is 543315505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505513345 - 2¹³ = 505505153 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31731 + ... + 44920.

It is an arithmetic number, because the mean of its divisors is an integer number (75885480).

Almost surely, 2^505513345 is an apocalyptic number.

It is an amenable number.

505513345 is a deficient number, since it is larger than the sum of its proper divisors (101570495).

505513345 is a wasteful number, since it uses less digits than its factorization.

505513345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77975.

The product of its (nonzero) digits is 22500, while the sum is 31.

The square root of 505513345 is about 22483.6239294292. The cubic root of 505513345 is about 796.6071650345.

The spelling of 505513345 in words is "five hundred five million, five hundred thirteen thousand, three hundred forty-five".