5161689 has 24 divisors (see below), whose sum is σ = 8109192. Its totient is φ = 3144960.

The previous prime is 5161679. The next prime is 5161697. The reversal of 5161689 is 9861615.

5161689 = 433² + 434² + ... + 458².

5161689 is digitally balanced in base 4, 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 4 ways, for example, as 166464 + 4995225 = 408^2 + 2235^2 .

It is not a de Polignac number, because 5161689 - 2⁷ = 5161561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5161609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18229 + ... + 18509.

It is an arithmetic number, because the mean of its divisors is an integer number (337883).

Almost surely, 2^5161689 is an apocalyptic number.

It is an amenable number.

5161689 is a deficient number, since it is larger than the sum of its proper divisors (2947503).

5161689 is a wasteful number, since it uses less digits than its factorization.

5161689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 454 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 5161689 is about 2271.9350782978. The cubic root of 5161689 is about 172.8213041185.

The spelling of 5161689 in words is "five million, one hundred sixty-one thousand, six hundred eighty-nine".