505831473 has 48 divisors (see below), whose sum is σ = 887193216. Its totient is φ = 281957760.

The previous prime is 505831463. The next prime is 505831493. The reversal of 505831473 is 374138505.

505831473 is a `hidden beast` number, since 5 + 0 + 583 + 1 + 4 + 73 = 666.

It is not a de Polignac number, because 505831473 - 2⁴ = 505831457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505831423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66115 + ... + 73367.

It is an arithmetic number, because the mean of its divisors is an integer number (18483192).

Almost surely, 2^505831473 is an apocalyptic number.

It is an amenable number.

505831473 is a deficient number, since it is larger than the sum of its proper divisors (381361743).

505831473 is an equidigital number, since it uses as much as digits as its factorization.

505831473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7316 (or 7304 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 505831473 is about 22490.6974769570. The cubic root of 505831473 is about 796.7742360618.

Adding to 505831473 its reverse (374138505), we get a palindrome (879969978).

The spelling of 505831473 in words is "five hundred five million, eight hundred thirty-one thousand, four hundred seventy-three".