605500561 has 2 divisors, whose sum is σ = 605500562. Its totient is φ = 605500560.

The previous prime is 605500537. The next prime is 605500583. The reversal of 605500561 is 165005506.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 356492161 + 249008400 = 18881^2 + 15780^2 .

It is a cyclic number.

It is not a de Polignac number, because 605500561 - 2⁷ = 605500433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (605500591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302750280 + 302750281.

It is an arithmetic number, because the mean of its divisors is an integer number (302750281).

Almost surely, 2^605500561 is an apocalyptic number.

It is an amenable number.

605500561 is a deficient number, since it is larger than the sum of its proper divisors (1).

605500561 is an equidigital number, since it uses as much as digits as its factorization.

605500561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 605500561 is about 24606.9209979632. The cubic root of 605500561 is about 846.0022471610.

The spelling of 605500561 in words is "six hundred five million, five hundred thousand, five hundred sixty-one".