501566560 has 192 divisors, whose sum is σ = 1391281920. Its totient is φ = 168929280.

The previous prime is 501566557. The next prime is 501566567. The reversal of 501566560 is 65665105.

It is a super-2 number, since 2×501566560² = 503138028220467200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501566567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1772179 + ... + 1772461.

It is an arithmetic number, because the mean of its divisors is an integer number (7246260).

Almost surely, 2^501566560 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 501566560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (695640960).

501566560 is an abundant number, since it is smaller than the sum of its proper divisors (889715360).

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

501566560 is a wasteful number, since it uses less digits than its factorization.

501566560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 501566560 is about 22395.6817266186. The cubic root of 501566560 is about 794.5285814502.

The spelling of 501566560 in words is "five hundred one million, five hundred sixty-six thousand, five hundred sixty".