501321166 has 8 divisors (see below), whose sum is σ = 753333480. Its totient is φ = 250210008.

The previous prime is 501321157. The next prime is 501321203. The reversal of 501321166 is 661123105.

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

It is a super-2 number, since 2×501321166² = 502645822959199112, 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 501321166.

It is a congruent number.

It is an unprimeable number.

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, 223896 + ... + 226123.

It is an arithmetic number, because the mean of its divisors is an integer number (94166685).

Almost surely, 2^501321166 is an apocalyptic number.

501321166 is a deficient number, since it is larger than the sum of its proper divisors (252012314).

501321166 is a wasteful number, since it uses less digits than its factorization.

501321166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450578.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 501321166 is about 22390.2024555384. The cubic root of 501321166 is about 794.3989845911.

The spelling of 501321166 in words is "five hundred one million, three hundred twenty-one thousand, one hundred sixty-six".