6520253 has 2 divisors, whose sum is σ = 6520254. Its totient is φ = 6520252.

The previous prime is 6520223. The next prime is 6520277. The reversal of 6520253 is 3520256.

It is a happy number.

6520253 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3485689 + 3034564 = 1867^2 + 1742^2 .

It is a cyclic number.

It is not a de Polignac number, because 6520253 - 2¹⁴ = 6503869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6520223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3260126 + 3260127.

It is an arithmetic number, because the mean of its divisors is an integer number (3260127).

Almost surely, 2^6520253 is an apocalyptic number.

It is an amenable number.

6520253 is a deficient number, since it is larger than the sum of its proper divisors (1).

6520253 is an equidigital number, since it uses as much as digits as its factorization.

6520253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 6520253 is about 2553.4786077036. The cubic root of 6520253 is about 186.8191890471.

The spelling of 6520253 in words is "six million, five hundred twenty thousand, two hundred fifty-three".