5165521 has 4 divisors (see below), whose sum is σ = 5179392. Its totient is φ = 5151652.

The previous prime is 5165519. The next prime is 5165527. The reversal of 5165521 is 1255615.

5165521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5165521 - 2¹ = 5165519 is a prime.

It is a Duffinian number.

5165521 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5165527) 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, 6361 + ... + 7126.

It is an arithmetic number, because the mean of its divisors is an integer number (1294848).

Almost surely, 2^5165521 is an apocalyptic number.

It is an amenable number.

5165521 is a deficient number, since it is larger than the sum of its proper divisors (13871).

5165521 is a wasteful number, since it uses less digits than its factorization.

5165521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13870.

The product of its digits is 1500, while the sum is 25.

The square root of 5165521 is about 2272.7782557918. The cubic root of 5165521 is about 172.8640606284.

The spelling of 5165521 in words is "five million, one hundred sixty-five thousand, five hundred twenty-one".