561552743 has 2 divisors, whose sum is σ = 561552744. Its totient is φ = 561552742.

The previous prime is 561552707. The next prime is 561552773. The reversal of 561552743 is 347255165.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561552743 - 2⁶ = 561552679 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 561552697 and 561552706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561552773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280776371 + 280776372.

It is an arithmetic number, because the mean of its divisors is an integer number (280776372).

Almost surely, 2^561552743 is an apocalyptic number.

561552743 is a deficient number, since it is larger than the sum of its proper divisors (1).

561552743 is an equidigital number, since it uses as much as digits as its factorization.

561552743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126000, while the sum is 38.

The square root of 561552743 is about 23697.1041057763. The cubic root of 561552743 is about 825.0181779894.

The spelling of 561552743 in words is "five hundred sixty-one million, five hundred fifty-two thousand, seven hundred forty-three".