561648383 has 2 divisors, whose sum is σ = 561648384. Its totient is φ = 561648382.

The previous prime is 561648371. The next prime is 561648389. The reversal of 561648383 is 383846165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561648383 - 2⁶ = 561648319 is a prime.

It is a super-2 number, since 2×561648383² = 630897812253029378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561648389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280824191 + 280824192.

It is an arithmetic number, because the mean of its divisors is an integer number (280824192).

Almost surely, 2^561648383 is an apocalyptic number.

561648383 is a deficient number, since it is larger than the sum of its proper divisors (1).

561648383 is an equidigital number, since it uses as much as digits as its factorization.

561648383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 44.

The square root of 561648383 is about 23699.1219879556. The cubic root of 561648383 is about 825.0650125687.

The spelling of 561648383 in words is "five hundred sixty-one million, six hundred forty-eight thousand, three hundred eighty-three".