561453653 has 2 divisors, whose sum is σ = 561453654. Its totient is φ = 561453652.

The previous prime is 561453649. The next prime is 561453661. The reversal of 561453653 is 356354165.

561453653 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 can be written as a sum of positive squares in only one way, i.e., 546530884 + 14922769 = 23378^2 + 3863^2 .

It is a cyclic number.

It is not a de Polignac number, because 561453653 - 2² = 561453649 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561453643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280726826 + 280726827.

It is an arithmetic number, because the mean of its divisors is an integer number (280726827).

Almost surely, 2^561453653 is an apocalyptic number.

It is an amenable number.

561453653 is a deficient number, since it is larger than the sum of its proper divisors (1).

561453653 is an equidigital number, since it uses as much as digits as its factorization.

561453653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162000, while the sum is 38.

The square root of 561453653 is about 23695.0132517372. The cubic root of 561453653 is about 824.9696483477.

The spelling of 561453653 in words is "five hundred sixty-one million, four hundred fifty-three thousand, six hundred fifty-three".