500745981 has 8 divisors (see below), whose sum is σ = 674272224. Its totient is φ = 330525200.

The previous prime is 500745979. The next prime is 500746013. The reversal of 500745981 is 189547005.

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

It is a cyclic number.

It is not a de Polignac number, because 500745981 - 2¹ = 500745979 is a prime.

It is a super-2 number, since 2×500745981² = 501493074975304722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500745911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 826011 + ... + 826616.

It is an arithmetic number, because the mean of its divisors is an integer number (84284028).

Almost surely, 2^500745981 is an apocalyptic number.

It is an amenable number.

500745981 is a deficient number, since it is larger than the sum of its proper divisors (173526243).

500745981 is a wasteful number, since it uses less digits than its factorization.

500745981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652731.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 500745981 is about 22377.3542001730. The cubic root of 500745981 is about 794.0950535171.

The spelling of 500745981 in words is "five hundred million, seven hundred forty-five thousand, nine hundred eighty-one".