5161521 has 16 divisors (see below), whose sum is σ = 7338240. Its totient is φ = 3217680.

The previous prime is 5161517. The next prime is 5161529. The reversal of 5161521 is 1251615.

It is not a de Polignac number, because 5161521 - 2² = 5161517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5161529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4186 + ... + 5276.

It is an arithmetic number, because the mean of its divisors is an integer number (458640).

Almost surely, 2^5161521 is an apocalyptic number.

It is an amenable number.

5161521 is a deficient number, since it is larger than the sum of its proper divisors (2176719).

5161521 is a wasteful number, since it uses less digits than its factorization.

5161521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196.

The product of its digits is 300, while the sum is 21.

The square root of 5161521 is about 2271.8981051095. The cubic root of 5161521 is about 172.8194291318.

The spelling of 5161521 in words is "five million, one hundred sixty-one thousand, five hundred twenty-one".