855939523 has 2 divisors, whose sum is σ = 855939524. Its totient is φ = 855939522.

The previous prime is 855939517. The next prime is 855939529. The reversal of 855939523 is 325939558.

It is a balanced prime because it is at equal distance from previous prime (855939517) and next prime (855939529).

It is a cyclic number.

It is not a de Polignac number, because 855939523 - 2²¹ = 853842371 is a prime.

It is not a weakly prime, because it can be changed into another prime (855939529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427969761 + 427969762.

It is an arithmetic number, because the mean of its divisors is an integer number (427969762).

Almost surely, 2^855939523 is an apocalyptic number.

855939523 is a deficient number, since it is larger than the sum of its proper divisors (1).

855939523 is an equidigital number, since it uses as much as digits as its factorization.

855939523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1458000, while the sum is 49.

The square root of 855939523 is about 29256.4441277473. Note that the first 3 decimals coincide. The cubic root of 855939523 is about 949.4695184224.

The spelling of 855939523 in words is "eight hundred fifty-five million, nine hundred thirty-nine thousand, five hundred twenty-three".