561723583 has 2 divisors, whose sum is σ = 561723584. Its totient is φ = 561723582.

The previous prime is 561723431. The next prime is 561723629. The reversal of 561723583 is 385327165.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561723583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561720583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280861791 + 280861792.

It is an arithmetic number, because the mean of its divisors is an integer number (280861792).

Almost surely, 2^561723583 is an apocalyptic number.

561723583 is a deficient number, since it is larger than the sum of its proper divisors (1).

561723583 is an equidigital number, since it uses as much as digits as its factorization.

561723583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 40.

The square root of 561723583 is about 23700.7084915198. The cubic root of 561723583 is about 825.1018340167.

The spelling of 561723583 in words is "five hundred sixty-one million, seven hundred twenty-three thousand, five hundred eighty-three".