6345551 has 2 divisors, whose sum is σ = 6345552. Its totient is φ = 6345550.

The previous prime is 6345541. The next prime is 6345617. The reversal of 6345551 is 1555436.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6345551 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6345541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3172775 + 3172776.

It is an arithmetic number, because the mean of its divisors is an integer number (3172776).

Almost surely, 2^6345551 is an apocalyptic number.

6345551 is a deficient number, since it is larger than the sum of its proper divisors (1).

6345551 is an equidigital number, since it uses as much as digits as its factorization.

6345551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9000, while the sum is 29.

The square root of 6345551 is about 2519.0377130960. The cubic root of 6345551 is about 185.1355325316.

The spelling of 6345551 in words is "six million, three hundred forty-five thousand, five hundred fifty-one".