505945583 has 16 divisors (see below), whose sum is σ = 598359552. Its totient is φ = 421740000.

The previous prime is 505945577. The next prime is 505945597. The reversal of 505945583 is 385549505.

It is not a de Polignac number, because 505945583 - 2⁴ = 505945567 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 (505945543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9878 + ... + 33308.

It is an arithmetic number, because the mean of its divisors is an integer number (37397472).

Almost surely, 2^505945583 is an apocalyptic number.

505945583 is a deficient number, since it is larger than the sum of its proper divisors (92413969).

505945583 is a wasteful number, since it uses less digits than its factorization.

505945583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23606.

The product of its (nonzero) digits is 540000, while the sum is 44.

The square root of 505945583 is about 22493.2341605204. The cubic root of 505945583 is about 796.8341460496.

The spelling of 505945583 in words is "five hundred five million, nine hundred forty-five thousand, five hundred eighty-three".