500999957 has 4 divisors (see below), whose sum is σ = 506629260. Its totient is φ = 495370656.

The previous prime is 500999903. The next prime is 500999971. The reversal of 500999957 is 759999005.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28633201 + 472366756 = 5351^2 + 21734^2 .

It is a cyclic number.

It is not a de Polignac number, because 500999957 - 2⁸ = 500999701 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 500999899 and 500999908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500999977) 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 3 ways as a sum of consecutive naturals, for example, 2814518 + ... + 2814695.

It is an arithmetic number, because the mean of its divisors is an integer number (126657315).

Almost surely, 2^500999957 is an apocalyptic number.

It is an amenable number.

500999957 is a deficient number, since it is larger than the sum of its proper divisors (5629303).

500999957 is an equidigital number, since it uses as much as digits as its factorization.

500999957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5629302.

The product of its (nonzero) digits is 1148175, while the sum is 53.

The square root of 500999957 is about 22383.0283250502. The cubic root of 500999957 is about 794.2292845813.

The spelling of 500999957 in words is "five hundred million, nine hundred ninety-nine thousand, nine hundred fifty-seven".