561671445 has 32 divisors (see below), whose sum is σ = 962035200. Its totient is φ = 278973504.

The previous prime is 561671413. The next prime is 561671447. The reversal of 561671445 is 544176165.

561671445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 561671445 - 2⁵ = 561671413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561671447) 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, 114 + ... + 33516.

It is an arithmetic number, because the mean of its divisors is an integer number (30063600).

Almost surely, 2^561671445 is an apocalyptic number.

It is an amenable number.

561671445 is a deficient number, since it is larger than the sum of its proper divisors (400363755).

561671445 is a wasteful number, since it uses less digits than its factorization.

561671445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33489.

The product of its digits is 100800, while the sum is 39.

The square root of 561671445 is about 23699.6085410709. The cubic root of 561671445 is about 825.0763051553.

The spelling of 561671445 in words is "five hundred sixty-one million, six hundred seventy-one thousand, four hundred forty-five".