523687161 has 16 divisors (see below), whose sum is σ = 729198720. Its totient is φ = 333674880.

The previous prime is 523687147. The next prime is 523687169. The reversal of 523687161 is 161786325.

It is not a de Polignac number, because 523687161 - 2¹⁹ = 523162873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (523687169) 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 in 15 ways as a sum of consecutive naturals, for example, 115701 + ... + 120141.

It is an arithmetic number, because the mean of its divisors is an integer number (45574920).

Almost surely, 2^523687161 is an apocalyptic number.

It is an amenable number.

523687161 is a deficient number, since it is larger than the sum of its proper divisors (205511559).

523687161 is a wasteful number, since it uses less digits than its factorization.

523687161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6176.

The product of its digits is 60480, while the sum is 39.

The square root of 523687161 is about 22884.2120467365. The cubic root of 523687161 is about 806.0413261531.

The spelling of 523687161 in words is "five hundred twenty-three million, six hundred eighty-seven thousand, one hundred sixty-one".