501111066 has 8 divisors (see below), whose sum is σ = 1002222144. Its totient is φ = 167037020.

The previous prime is 501111053. The next prime is 501111071. The reversal of 501111066 is 660111105.

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

501111066 is an admirable number.

It is a super-2 number, since 2×501111066² = 502224600935312712, which contains 22 as substring.

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, 41759250 + ... + 41759261.

It is an arithmetic number, because the mean of its divisors is an integer number (125277768).

Almost surely, 2^501111066 is an apocalyptic number.

501111066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

501111066 is a wasteful number, since it uses less digits than its factorization.

501111066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83518516.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 501111066 is about 22385.5101795782. The cubic root of 501111066 is about 794.2879935010.

The spelling of 501111066 in words is "five hundred one million, one hundred eleven thousand, sixty-six".