5103521 has 4 divisors (see below), whose sum is σ = 5241492. Its totient is φ = 4965552.

The previous prime is 5103517. The next prime is 5103523. The reversal of 5103521 is 1253015.

5103521 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.

It can be written as a sum of positive squares in 2 ways, for example, as 4363921 + 739600 = 2089^2 + 860^2 .

It is a cyclic number.

It is not a de Polignac number, because 5103521 - 2² = 5103517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5103521.

It is not an unprimeable number, because it can be changed into a prime (5103523) 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, 68930 + ... + 69003.

It is an arithmetic number, because the mean of its divisors is an integer number (1310373).

Almost surely, 2^5103521 is an apocalyptic number.

It is an amenable number.

5103521 is a deficient number, since it is larger than the sum of its proper divisors (137971).

5103521 is a wasteful number, since it uses less digits than its factorization.

5103521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137970.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 5103521 is about 2259.0973861257. The cubic root of 5103521 is about 172.1696653750.

Adding to 5103521 its reverse (1253015), we get a palindrome (6356536).

The spelling of 5103521 in words is "five million, one hundred three thousand, five hundred twenty-one".