561178170 has 96 divisors (see below), whose sum is σ = 1675095552. Its totient is φ = 127685376.

The previous prime is 561178153. The next prime is 561178171. The reversal of 561178170 is 71871165.

It is a happy number.

561178170 is a `hidden beast` number, since 561 + 17 + 81 + 7 + 0 = 666.

561178170 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (561178171) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 144879 + ... + 148701.

It is an arithmetic number, because the mean of its divisors is an integer number (17448912).

Almost surely, 2^561178170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561178170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (837547776).

561178170 is an abundant number, since it is smaller than the sum of its proper divisors (1113917382).

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

561178170 is a wasteful number, since it uses less digits than its factorization.

561178170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4076 (or 4073 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 36.

The square root of 561178170 is about 23689.1994377184. The cubic root of 561178170 is about 824.8346996643.

The spelling of 561178170 in words is "five hundred sixty-one million, one hundred seventy-eight thousand, one hundred seventy".