561548445 has 16 divisors (see below), whose sum is σ = 922761600. Its totient is φ = 291397824.

The previous prime is 561548419. The next prime is 561548453. The reversal of 561548445 is 544845165.

It is not a de Polignac number, because 561548445 - 2⁹ = 561547933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 561548397 and 561548406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 505345 + ... + 506454.

It is an arithmetic number, because the mean of its divisors is an integer number (57672600).

Almost surely, 2^561548445 is an apocalyptic number.

It is an amenable number.

561548445 is a deficient number, since it is larger than the sum of its proper divisors (361213155).

561548445 is a wasteful number, since it uses less digits than its factorization.

561548445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011844.

The product of its digits is 384000, while the sum is 42.

The square root of 561548445 is about 23697.0134194164. The cubic root of 561548445 is about 825.0160731487.

The spelling of 561548445 in words is "five hundred sixty-one million, five hundred forty-eight thousand, four hundred forty-five".