561517 has 4 divisors (see below), whose sum is σ = 612576. Its totient is φ = 510460.

The previous prime is 561461. The next prime is 561521. The reversal of 561517 is 715165.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 561517 - 2⁷ = 561389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 561491 and 561500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25513 + ... + 25534.

It is an arithmetic number, because the mean of its divisors is an integer number (153144).

2⁵⁶¹⁵¹⁷ is an apocalyptic number.

It is an amenable number.

561517 is a deficient number, since it is larger than the sum of its proper divisors (51059).

561517 is a wasteful number, since it uses less digits than its factorization.

561517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51058.

The product of its digits is 1050, while the sum is 25.

The square root of 561517 is about 749.3443801084. The cubic root of 561517 is about 82.5000673400.

The spelling of 561517 in words is "five hundred sixty-one thousand, five hundred seventeen".