269572561 has 2 divisors, whose sum is σ = 269572562. Its totient is φ = 269572560.

The previous prime is 269572549. The next prime is 269572591. The reversal of 269572561 is 165275962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 259049025 + 10523536 = 16095^2 + 3244^2 .

It is a cyclic number.

It is not a de Polignac number, because 269572561 - 2⁵ = 269572529 is a prime.

It is not a weakly prime, because it can be changed into another prime (269572591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134786280 + 134786281.

It is an arithmetic number, because the mean of its divisors is an integer number (134786281).

Almost surely, 2^269572561 is an apocalyptic number.

It is an amenable number.

269572561 is a deficient number, since it is larger than the sum of its proper divisors (1).

269572561 is an equidigital number, since it uses as much as digits as its factorization.

269572561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 43.

The square root of 269572561 is about 16418.6650188132. The cubic root of 269572561 is about 645.9891567159.

The spelling of 269572561 in words is "two hundred sixty-nine million, five hundred seventy-two thousand, five hundred sixty-one".