501663441 has 16 divisors (see below), whose sum is σ = 704709440. Its totient is φ = 316560960.

The previous prime is 501663439. The next prime is 501663467. The reversal of 501663441 is 144366105.

It is not a de Polignac number, because 501663441 - 2¹ = 501663439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 501663399 and 501663408.

It is not an unprimeable number, because it can be changed into a prime (501665441) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 75531 + ... + 81903.

It is an arithmetic number, because the mean of its divisors is an integer number (44044340).

Almost surely, 2^501663441 is an apocalyptic number.

It is an amenable number.

501663441 is a deficient number, since it is larger than the sum of its proper divisors (203045999).

501663441 is a wasteful number, since it uses less digits than its factorization.

501663441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7776.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 501663441 is about 22397.8445614751. The cubic root of 501663441 is about 794.5797343607.

The spelling of 501663441 in words is "five hundred one million, six hundred sixty-three thousand, four hundred forty-one".