561916195 has 4 divisors (see below), whose sum is σ = 674299440. Its totient is φ = 449532952.

The previous prime is 561916189. The next prime is 561916213. The reversal of 561916195 is 591619165.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 561916195 - 2⁵ = 561916163 is a prime.

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, 56191615 + ... + 56191624.

It is an arithmetic number, because the mean of its divisors is an integer number (168574860).

Almost surely, 2^561916195 is an apocalyptic number.

561916195 is a deficient number, since it is larger than the sum of its proper divisors (112383245).

561916195 is a wasteful number, since it uses less digits than its factorization.

561916195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112383244.

The product of its digits is 72900, while the sum is 43.

The square root of 561916195 is about 23704.7715660793. The cubic root of 561916195 is about 825.1961309021.

The spelling of 561916195 in words is "five hundred sixty-one million, nine hundred sixteen thousand, one hundred ninety-five".