501121166 has 24 divisors (see below), whose sum is σ = 930234384. Its totient is φ = 198244800.

The previous prime is 501121151. The next prime is 501121177. The reversal of 501121166 is 661121105.

It is a super-2 number, since 2×501121166² = 502244846026399112, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103535 + ... + 108266.

It is an arithmetic number, because the mean of its divisors is an integer number (38759766).

Almost surely, 2^501121166 is an apocalyptic number.

501121166 is a deficient number, since it is larger than the sum of its proper divisors (429113218).

501121166 is a wasteful number, since it uses less digits than its factorization.

501121166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211836 (or 211823 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 501121166 is about 22385.7357707983. The cubic root of 501121166 is about 794.2933298129.

The spelling of 501121166 in words is "five hundred one million, one hundred twenty-one thousand, one hundred sixty-six".