523755961 has 2 divisors, whose sum is σ = 523755962. Its totient is φ = 523755960.

The previous prime is 523755949. The next prime is 523755989. The reversal of 523755961 is 169557325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318836736 + 204919225 = 17856^2 + 14315^2 .

It is a cyclic number.

It is not a de Polignac number, because 523755961 - 2¹¹ = 523753913 is a prime.

It is not a weakly prime, because it can be changed into another prime (523755061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261877980 + 261877981.

It is an arithmetic number, because the mean of its divisors is an integer number (261877981).

Almost surely, 2^523755961 is an apocalyptic number.

It is an amenable number.

523755961 is a deficient number, since it is larger than the sum of its proper divisors (1).

523755961 is an equidigital number, since it uses as much as digits as its factorization.

523755961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 283500, while the sum is 43.

The square root of 523755961 is about 22885.7152171393. The cubic root of 523755961 is about 806.0766228079.

The spelling of 523755961 in words is "five hundred twenty-three million, seven hundred fifty-five thousand, nine hundred sixty-one".