523161 has 6 divisors (see below), whose sum is σ = 755690. Its totient is φ = 348768.

The previous prime is 523129. The next prime is 523169. The reversal of 523161 is 161325.

523161 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 518400 + 4761 = 720^2 + 69^2 .

It is not a de Polignac number, because 523161 - 2⁵ = 523129 is a prime.

It is a Duffinian number.

523161 is strictly pandigital in base 7.

It is not an unprimeable number, because it can be changed into a prime (523169) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29056 + ... + 29073.

2⁵²³¹⁶¹ is an apocalyptic number.

It is an amenable number.

523161 is a deficient number, since it is larger than the sum of its proper divisors (232529).

523161 is a wasteful number, since it uses less digits than its factorization.

523161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58135 (or 58132 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 523161 is about 723.2986934870. The cubic root of 523161 is about 80.5771286036.

Adding to 523161 its reverse (161325), we get a palindrome (684486).

The spelling of 523161 in words is "five hundred twenty-three thousand, one hundred sixty-one".