561178884 has 48 divisors (see below), whose sum is σ = 1548086400. Its totient is φ = 154807296.

The previous prime is 561178883. The next prime is 561178921. The reversal of 561178884 is 488871165.

It is a happy number.

It is a super-3 number, since 3×561178884³ (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (561178883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112749 + ... + 117620.

It is an arithmetic number, because the mean of its divisors is an integer number (32251800).

Almost surely, 2^561178884 is an apocalyptic number.

It is an amenable number.

561178884 is an abundant number, since it is smaller than the sum of its proper divisors (986907516).

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

561178884 is a wasteful number, since it uses less digits than its factorization.

561178884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230412 (or 230410 counting only the distinct ones).

The product of its digits is 430080, while the sum is 48.

The square root of 561178884 is about 23689.2145078726. The cubic root of 561178884 is about 824.8350494830.

The spelling of 561178884 in words is "five hundred sixty-one million, one hundred seventy-eight thousand, eight hundred eighty-four".