5021521 has 8 divisors (see below), whose sum is σ = 5290560. Its totient is φ = 4756752.

The previous prime is 5021519. The next prime is 5021531. The reversal of 5021521 is 1251205.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5021521 - 2¹ = 5021519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5021495 and 5021504.

It is not an unprimeable number, because it can be changed into a prime (5021531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1506 + ... + 3508.

It is an arithmetic number, because the mean of its divisors is an integer number (661320).

Almost surely, 2^5021521 is an apocalyptic number.

It is an amenable number.

5021521 is a deficient number, since it is larger than the sum of its proper divisors (269039).

5021521 is a wasteful number, since it uses less digits than its factorization.

5021521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 5021521 is about 2240.8750522954. The cubic root of 5021521 is about 171.2425794643.

Adding to 5021521 its reverse (1251205), we get a palindrome (6272726).

The spelling of 5021521 in words is "five million, twenty-one thousand, five hundred twenty-one".