501002656 has 144 divisors (see below), whose sum is σ = 1293449472. Its totient is φ = 188697600.

The previous prime is 501002653. The next prime is 501002707. The reversal of 501002656 is 656200105.

It is a super-2 number, since 2×501002656² = 502007322638108672, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 501002656.

It is not an unprimeable number, because it can be changed into a prime (501002653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 534220 + ... + 535156.

It is an arithmetic number, because the mean of its divisors is an integer number (8982288).

Almost surely, 2^501002656 is an apocalyptic number.

501002656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 501002656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (646724736).

501002656 is an abundant number, since it is smaller than the sum of its proper divisors (792446816).

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

501002656 is a wasteful number, since it uses less digits than its factorization.

501002656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003 (or 988 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 501002656 is about 22383.0886161852. The cubic root of 501002656 is about 794.2307108096.

The spelling of 501002656 in words is "five hundred one million, two thousand, six hundred fifty-six".