561192191 has 8 divisors (see below), whose sum is σ = 641746464. Its totient is φ = 480733920.

The previous prime is 561192187. The next prime is 561192193. The reversal of 561192191 is 191291165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 561192191 - 2² = 561192187 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 (561192193) 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, 11000 + ... + 35261.

It is an arithmetic number, because the mean of its divisors is an integer number (80218308).

Almost surely, 2^561192191 is an apocalyptic number.

561192191 is a deficient number, since it is larger than the sum of its proper divisors (80554273).

561192191 is a wasteful number, since it uses less digits than its factorization.

561192191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48001.

The product of its digits is 4860, while the sum is 35.

The square root of 561192191 is about 23689.4953724219. The cubic root of 561192191 is about 824.8415690875.

The spelling of 561192191 in words is "five hundred sixty-one million, one hundred ninety-two thousand, one hundred ninety-one".