5251521 has 48 divisors (see below), whose sum is σ = 8733312. Its totient is φ = 2787840.

The previous prime is 5251513. The next prime is 5251529. The reversal of 5251521 is 1251525.

5251521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (5251513) and next prime (5251529).

It is not a de Polignac number, because 5251521 - 2³ = 5251513 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5251529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 141915 + ... + 141951.

It is an arithmetic number, because the mean of its divisors is an integer number (181944).

Almost surely, 2^5251521 is an apocalyptic number.

5251521 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

5251521 is a deficient number, since it is larger than the sum of its proper divisors (3481791).

5251521 is a wasteful number, since it uses less digits than its factorization.

5251521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 91 counting only the distinct ones).

The product of its digits is 500, while the sum is 21.

The square root of 5251521 is about 2291.6197328527. The cubic root of 5251521 is about 173.8181148666.

The spelling of 5251521 in words is "five million, two hundred fifty-one thousand, five hundred twenty-one".