561072207 has 4 divisors (see below), whose sum is σ = 748096280. Its totient is φ = 374048136.

The previous prime is 561072203. The next prime is 561072217. The reversal of 561072207 is 702270165.

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

It is not a de Polignac number, because 561072207 - 2² = 561072203 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 (561072203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93512032 + ... + 93512037.

It is an arithmetic number, because the mean of its divisors is an integer number (187024070).

Almost surely, 2^561072207 is an apocalyptic number.

561072207 is a deficient number, since it is larger than the sum of its proper divisors (187024073).

561072207 is a wasteful number, since it uses less digits than its factorization.

561072207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187024072.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 561072207 is about 23686.9628065736. The cubic root of 561072207 is about 824.7827806449.

The spelling of 561072207 in words is "five hundred sixty-one million, seventy-two thousand, two hundred seven".