561850197 has 32 divisors (see below), whose sum is σ = 799787520. Its totient is φ = 349848000.

The previous prime is 561850189. The next prime is 561850207. The reversal of 561850197 is 791058165.

It is not a de Polignac number, because 561850197 - 2³ = 561850189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561850117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2238322 + ... + 2238572.

It is an arithmetic number, because the mean of its divisors is an integer number (24993360).

Almost surely, 2^561850197 is an apocalyptic number.

561850197 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

561850197 is a deficient number, since it is larger than the sum of its proper divisors (237937323).

561850197 is a wasteful number, since it uses less digits than its factorization.

561850197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673.

The product of its (nonzero) digits is 75600, while the sum is 42.

The square root of 561850197 is about 23703.3794426027. The cubic root of 561850197 is about 825.1638227471.

The spelling of 561850197 in words is "five hundred sixty-one million, eight hundred fifty thousand, one hundred ninety-seven".