6248521 has 2 divisors, whose sum is σ = 6248522. Its totient is φ = 6248520.

The previous prime is 6248519. The next prime is 6248551. The reversal of 6248521 is 1258426.

It is the 1021-st star number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5812921 + 435600 = 2411^2 + 660^2 .

It is a cyclic number.

It is not a de Polignac number, because 6248521 - 2¹ = 6248519 is a prime.

Together with 6248519, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6248521.

It is not a weakly prime, because it can be changed into another prime (6248551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3124260 + 3124261.

It is an arithmetic number, because the mean of its divisors is an integer number (3124261).

Almost surely, 2^6248521 is an apocalyptic number.

It is an amenable number.

6248521 is a deficient number, since it is larger than the sum of its proper divisors (1).

6248521 is an equidigital number, since it uses as much as digits as its factorization.

6248521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 28.

The square root of 6248521 is about 2499.7041824984. The cubic root of 6248521 is about 184.1870439655.

The spelling of 6248521 in words is "six million, two hundred forty-eight thousand, five hundred twenty-one".