501987456 has 96 divisors (see below), whose sum is σ = 1498114800. Its totient is φ = 167318784.

The previous prime is 501987413. The next prime is 501987457. The reversal of 501987456 is 654789105.

501987456 is a `hidden beast` number, since 5 + 0 + 198 + 7 + 456 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (501987457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23035 + ... + 39173.

Almost surely, 2^501987456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 501987456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (749057400).

501987456 is an abundant number, since it is smaller than the sum of its proper divisors (996127344).

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

501987456 is an equidigital number, since it uses as much as digits as its factorization.

501987456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16168 (or 16144 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 501987456 is about 22405.0765675996. The cubic root of 501987456 is about 794.7507655892.

The spelling of 501987456 in words is "five hundred one million, nine hundred eighty-seven thousand, four hundred fifty-six".