5126521 has 4 divisors (see below), whose sum is σ = 5159332. Its totient is φ = 5093712.

The previous prime is 5126497. The next prime is 5126543. The reversal of 5126521 is 1256215.

5126521 = T₁₇₃ + T₁₇₄ + ... + T₃₂₉.

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 1755625 + 3370896 = 1325^2 + 1836^2 .

It is a cyclic number.

It is not a de Polignac number, because 5126521 - 2⁷ = 5126393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5126492 and 5126501.

It is not an unprimeable number, because it can be changed into a prime (5126551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16170 + ... + 16483.

It is an arithmetic number, because the mean of its divisors is an integer number (1289833).

Almost surely, 2^5126521 is an apocalyptic number.

It is an amenable number.

5126521 is a deficient number, since it is larger than the sum of its proper divisors (32811).

5126521 is a wasteful number, since it uses less digits than its factorization.

5126521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32810.

The product of its digits is 600, while the sum is 22.

The square root of 5126521 is about 2264.1821923158. The cubic root of 5126521 is about 172.4279163920.

The spelling of 5126521 in words is "five million, one hundred twenty-six thousand, five hundred twenty-one".