523891087 has 2 divisors, whose sum is σ = 523891088. Its totient is φ = 523891086.

The previous prime is 523891051. The next prime is 523891111. The reversal of 523891087 is 780198325.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 523891087 - 2¹¹ = 523889039 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523891787) 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, 261945543 + 261945544.

It is an arithmetic number, because the mean of its divisors is an integer number (261945544).

Almost surely, 2^523891087 is an apocalyptic number.

523891087 is a deficient number, since it is larger than the sum of its proper divisors (1).

523891087 is an equidigital number, since it uses as much as digits as its factorization.

523891087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 523891087 is about 22888.6672176429. The cubic root of 523891087 is about 806.1459378784.

The spelling of 523891087 in words is "five hundred twenty-three million, eight hundred ninety-one thousand, eighty-seven".