6345181 has 2 divisors, whose sum is σ = 6345182. Its totient is φ = 6345180.

The previous prime is 6345179. The next prime is 6345187. The reversal of 6345181 is 1815436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5480281 + 864900 = 2341^2 + 930^2 .

It is a cyclic number.

It is not a de Polignac number, because 6345181 - 2¹ = 6345179 is a prime.

It is a super-2 number, since 2×6345181² = 80522643845522, which contains 22 as substring.

Together with 6345179, it forms a pair of twin primes.

6345181 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6345187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3172590 + 3172591.

It is an arithmetic number, because the mean of its divisors is an integer number (3172591).

Almost surely, 2^6345181 is an apocalyptic number.

It is an amenable number.

6345181 is a deficient number, since it is larger than the sum of its proper divisors (1).

6345181 is an equidigital number, since it uses as much as digits as its factorization.

6345181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 28.

The square root of 6345181 is about 2518.9642712829. The cubic root of 6345181 is about 185.1319341323.

The spelling of 6345181 in words is "six million, three hundred forty-five thousand, one hundred eighty-one".