561171349 has 6 divisors (see below), whose sum is σ = 566569410. Its totient is φ = 555777936.

The previous prime is 561171323. The next prime is 561171379. The reversal of 561171349 is 943171165.

It is a happy number.

561171349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 3880900 + 557290449 = 1970^2 + 23607^2 .

It is a de Polignac number, because none of the positive numbers 2^k-561171349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561171379) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 246187 + ... + 248455.

It is an arithmetic number, because the mean of its divisors is an integer number (94428235).

Almost surely, 2^561171349 is an apocalyptic number.

It is an amenable number.

561171349 is a deficient number, since it is larger than the sum of its proper divisors (5398061).

561171349 is an frugal number, since it uses more digits than its factorization.

561171349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4647 (or 2378 counting only the distinct ones).

The product of its digits is 22680, while the sum is 37.

The square root of 561171349 is about 23689.0554687180. The cubic root of 561171349 is about 824.8313577547.

The spelling of 561171349 in words is "five hundred sixty-one million, one hundred seventy-one thousand, three hundred forty-nine".