501561560 has 16 divisors (see below), whose sum is σ = 1128513600. Its totient is φ = 200624608.

The previous prime is 501561527. The next prime is 501561587. The reversal of 501561560 is 65165105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6269480 + ... + 6269559.

It is an arithmetic number, because the mean of its divisors is an integer number (70532100).

Almost surely, 2^501561560 is an apocalyptic number.

It is an amenable number.

501561560 is an abundant number, since it is smaller than the sum of its proper divisors (626952040).

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

501561560 is a wasteful number, since it uses less digits than its factorization.

501561560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12539050 (or 12539046 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 501561560 is about 22395.5700976778. The cubic root of 501561560 is about 794.5259412848.

The spelling of 501561560 in words is "five hundred one million, five hundred sixty-one thousand, five hundred sixty".