512161 has 4 divisors (see below), whose sum is σ = 551572. Its totient is φ = 472752.

The previous prime is 512147. The next prime is 512167. The reversal of 512161 is 161215.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 216225 + 295936 = 465^2 + 544^2 .

It is a cyclic number.

It is not a de Polignac number, because 512161 - 2¹³ = 503969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19686 + ... + 19711.

It is an arithmetic number, because the mean of its divisors is an integer number (137893).

2⁵¹²¹⁶¹ is an apocalyptic number.

It is an amenable number.

512161 is a deficient number, since it is larger than the sum of its proper divisors (39411).

512161 is a wasteful number, since it uses less digits than its factorization.

512161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39410.

The product of its digits is 60, while the sum is 16.

The square root of 512161 is about 715.6542461273. The cubic root of 512161 is about 80.0083845379.

Adding to 512161 its reverse (161215), we get a palindrome (673376).

The spelling of 512161 in words is "five hundred twelve thousand, one hundred sixty-one".