505974531 has 8 divisors (see below), whose sum is σ = 679783104. Its totient is φ = 334741160.

The previous prime is 505974527. The next prime is 505974551. The reversal of 505974531 is 135479505.

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

It is a cyclic number.

It is not a de Polignac number, because 505974531 - 2² = 505974527 is a prime.

It is a super-2 number, since 2×505974531² = 512020452041339922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 505974531.

It is not an unprimeable number, because it can be changed into a prime (505974551) 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 7 ways as a sum of consecutive naturals, for example, 643341 + ... + 644126.

It is an arithmetic number, because the mean of its divisors is an integer number (84972888).

Almost surely, 2^505974531 is an apocalyptic number.

505974531 is a deficient number, since it is larger than the sum of its proper divisors (173808573).

505974531 is a wasteful number, since it uses less digits than its factorization.

505974531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287601.

The product of its (nonzero) digits is 94500, while the sum is 39.

The square root of 505974531 is about 22493.8776337029. The cubic root of 505974531 is about 796.8493428848.

The spelling of 505974531 in words is "five hundred five million, nine hundred seventy-four thousand, five hundred thirty-one".