6342521 has 2 divisors, whose sum is σ = 6342522. Its totient is φ = 6342520.

The previous prime is 6342517. The next prime is 6342527. The reversal of 6342521 is 1252436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4752400 + 1590121 = 2180^2 + 1261^2 .

It is a cyclic number.

It is not a de Polignac number, because 6342521 - 2² = 6342517 is a prime.

It is not a weakly prime, because it can be changed into another prime (6342527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3171260 + 3171261.

It is an arithmetic number, because the mean of its divisors is an integer number (3171261).

Almost surely, 2^6342521 is an apocalyptic number.

It is an amenable number.

6342521 is a deficient number, since it is larger than the sum of its proper divisors (1).

6342521 is an equidigital number, since it uses as much as digits as its factorization.

6342521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 6342521 is about 2518.4362211499. The cubic root of 6342521 is about 185.1060604404.

Adding to 6342521 its reverse (1252436), we get a palindrome (7594957).

The spelling of 6342521 in words is "six million, three hundred forty-two thousand, five hundred twenty-one".