501366 has 8 divisors (see below), whose sum is σ = 1002744. Its totient is φ = 167120.

The previous prime is 501343. The next prime is 501367. The reversal of 501366 is 663105.

501366 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

501366 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501367) by changing a digit.

501366 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41775 + ... + 41786.

It is an arithmetic number, because the mean of its divisors is an integer number (125343).

2⁵⁰¹³⁶⁶ is an apocalyptic number.

501366 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.

501366 is a wasteful number, since it uses less digits than its factorization.

501366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83566.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 501366 is about 708.0720302342. The cubic root of 501366 is about 79.4422665367.

The spelling of 501366 in words is "five hundred one thousand, three hundred sixty-six".