501520489 has 4 divisors (see below), whose sum is σ = 501709824. Its totient is φ = 501331156.

The previous prime is 501520477. The next prime is 501520501. The reversal of 501520489 is 984025105.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (501520477) and next prime (501520501).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-501520489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (501520469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90637 + ... + 96010.

It is an arithmetic number, because the mean of its divisors is an integer number (125427456).

Almost surely, 2^501520489 is an apocalyptic number.

It is an amenable number.

501520489 is a deficient number, since it is larger than the sum of its proper divisors (189335).

501520489 is a wasteful number, since it uses less digits than its factorization.

501520489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189334.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 501520489 is about 22394.6531341747. The cubic root of 501520489 is about 794.5042537737.

The spelling of 501520489 in words is "five hundred one million, five hundred twenty thousand, four hundred eighty-nine".