561463 has 4 divisors (see below), whose sum is σ = 641680. Its totient is φ = 481248.

The previous prime is 561461. The next prime is 561521. The reversal of 561463 is 364165.

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

It is a cyclic number.

It is not a de Polignac number, because 561463 - 2¹ = 561461 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 (561461) 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, 40098 + ... + 40111.

It is an arithmetic number, because the mean of its divisors is an integer number (160420).

2⁵⁶¹⁴⁶³ is an apocalyptic number.

561463 is a deficient number, since it is larger than the sum of its proper divisors (80217).

561463 is an equidigital number, since it uses as much as digits as its factorization.

561463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80216.

The product of its digits is 2160, while the sum is 25.

The square root of 561463 is about 749.3083477448. The cubic root of 561463 is about 82.4974226314.

It can be divided in two parts, 561 and 463, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 561463 in words is "five hundred sixty-one thousand, four hundred sixty-three".