506351021 has 8 divisors (see below), whose sum is σ = 556092000. Its totient is φ = 457228240.

The previous prime is 506351009. The next prime is 506351023. The reversal of 506351021 is 120153605.

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 506351021 - 2¹⁰ = 506349997 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 (506351023) 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 7 ways as a sum of consecutive naturals, for example, 152831 + ... + 156108.

It is an arithmetic number, because the mean of its divisors is an integer number (69511500).

Almost surely, 2^506351021 is an apocalyptic number.

It is an amenable number.

506351021 is a deficient number, since it is larger than the sum of its proper divisors (49740979).

506351021 is a wasteful number, since it uses less digits than its factorization.

506351021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309099.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 506351021 is about 22502.2447991306. The cubic root of 506351021 is about 797.0469361174.

The spelling of 506351021 in words is "five hundred six million, three hundred fifty-one thousand, twenty-one".