561178560 has 56 divisors (see below), whose sum is σ = 1781744976. Its totient is φ = 149647360.

The previous prime is 561178537. The next prime is 561178567. The reversal of 561178560 is 65871165.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561178567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291321 + ... + 293240.

Almost surely, 2^561178560 is an apocalyptic number.

It is an amenable number.

561178560 is an abundant number, since it is smaller than the sum of its proper divisors (1220566416).

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

561178560 is a wasteful number, since it uses less digits than its factorization.

561178560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584581 (or 584571 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 561178560 is about 23689.2076693164. The cubic root of 561178560 is about 824.8348907418.

The spelling of 561178560 in words is "five hundred sixty-one million, one hundred seventy-eight thousand, five hundred sixty".