561447 has 6 divisors (see below), whose sum is σ = 810992. Its totient is φ = 374292.

The previous prime is 561439. The next prime is 561461. The reversal of 561447 is 744165.

561447 is a `hidden beast` number, since 5 + 614 + 47 = 666.

It is not a de Polignac number, because 561447 - 2³ = 561439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 561447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31183 + ... + 31200.

2⁵⁶¹⁴⁴⁷ is an apocalyptic number.

561447 is a deficient number, since it is larger than the sum of its proper divisors (249545).

561447 is a wasteful number, since it uses less digits than its factorization.

561447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62389 (or 62386 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 561447 is about 749.2976711561. The cubic root of 561447 is about 82.4966389815.

The spelling of 561447 in words is "five hundred sixty-one thousand, four hundred forty-seven".