561712531 has 2 divisors, whose sum is σ = 561712532. Its totient is φ = 561712530.

The previous prime is 561712519. The next prime is 561712607. The reversal of 561712531 is 135217165.

561712531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561712531 - 2¹⁷ = 561581459 is a prime.

It is a super-2 number, since 2×561712531² = 631041934964851922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 561712493 and 561712502.

It is not a weakly prime, because it can be changed into another prime (561712031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280856265 + 280856266.

It is an arithmetic number, because the mean of its divisors is an integer number (280856266).

Almost surely, 2^561712531 is an apocalyptic number.

561712531 is a deficient number, since it is larger than the sum of its proper divisors (1).

561712531 is an equidigital number, since it uses as much as digits as its factorization.

561712531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 31.

The square root of 561712531 is about 23700.4753327860. The cubic root of 561712531 is about 825.0964226450.

Adding to 561712531 its reverse (135217165), we get a palindrome (696929696).

The spelling of 561712531 in words is "five hundred sixty-one million, seven hundred twelve thousand, five hundred thirty-one".