561319 has 6 divisors (see below), whose sum is σ = 617120. Its totient is φ = 510180.

The previous prime is 561313. The next prime is 561343. The reversal of 561319 is 913165.

It is not a de Polignac number, because 561319 - 2⁷ = 561191 is a prime.

It is a super-2 number, since 2×561319² = 630158039522, which contains 22 as substring.

It is a Duffinian number.

561319 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 561293 and 561302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561313) 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, 2199 + ... + 2440.

2⁵⁶¹³¹⁹ is an apocalyptic number.

561319 is a deficient number, since it is larger than the sum of its proper divisors (55801).

561319 is a wasteful number, since it uses less digits than its factorization.

561319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4661 (or 4650 counting only the distinct ones).

The product of its digits is 810, while the sum is 25.

The square root of 561319 is about 749.2122529697. The cubic root of 561319 is about 82.4903692462.

The spelling of 561319 in words is "five hundred sixty-one thousand, three hundred nineteen".