855671523 has 16 divisors (see below), whose sum is σ = 1380579840. Its totient is φ = 460192896.

The previous prime is 855671521. The next prime is 855671533. The reversal of 855671523 is 325176558.

It is not a de Polignac number, because 855671523 - 2¹ = 855671521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (855671521) 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 in 15 ways as a sum of consecutive naturals, for example, 1198063 + ... + 1198776.

It is an arithmetic number, because the mean of its divisors is an integer number (86286240).

Almost surely, 2^855671523 is an apocalyptic number.

855671523 is a deficient number, since it is larger than the sum of its proper divisors (524908317).

855671523 is a wasteful number, since it uses less digits than its factorization.

855671523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2396866.

The product of its digits is 252000, while the sum is 42.

The square root of 855671523 is about 29251.8635816592. The cubic root of 855671523 is about 949.3704131367.

The spelling of 855671523 in words is "eight hundred fifty-five million, six hundred seventy-one thousand, five hundred twenty-three".