507161 has 4 divisors (see below), whose sum is σ = 537012. Its totient is φ = 477312.

The previous prime is 507151. The next prime is 507163. The reversal of 507161 is 161705.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161705 = 5 ⋅32341.

It can be written as a sum of positive squares in 2 ways, for example, as 309136 + 198025 = 556^2 + 445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-507161 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 507161.

It is not an unprimeable number, because it can be changed into a prime (507163) 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, 14900 + ... + 14933.

It is an arithmetic number, because the mean of its divisors is an integer number (134253).

2⁵⁰⁷¹⁶¹ is an apocalyptic number.

It is an amenable number.

507161 is a deficient number, since it is larger than the sum of its proper divisors (29851).

507161 is a wasteful number, since it uses less digits than its factorization.

507161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29850.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 507161 is about 712.1523713364. The cubic root of 507161 is about 79.7471705577.

Adding to 507161 its reverse (161705), we get a palindrome (668866).

The spelling of 507161 in words is "five hundred seven thousand, one hundred sixty-one".