501994 has 8 divisors (see below), whose sum is σ = 756000. Its totient is φ = 249996.

The previous prime is 501971. The next prime is 501997. The reversal of 501994 is 499105.

501994 = T₅₇₇ + T₅₇₈ + T₅₇₉.

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

It is not an unprimeable number, because it can be changed into a prime (501997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747 + ... + 1249.

It is an arithmetic number, because the mean of its divisors is an integer number (94500).

2⁵⁰¹⁹⁹⁴ is an apocalyptic number.

501994 is the 579-th centered triangular number.

501994 is a deficient number, since it is larger than the sum of its proper divisors (254006).

501994 is a wasteful number, since it uses less digits than its factorization.

501994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 501994 is about 708.5153491633. The cubic root of 501994 is about 79.4754219079.

The spelling of 501994 in words is "five hundred one thousand, nine hundred ninety-four".