2543301997 has 2 divisors, whose sum is σ = 2543301998. Its totient is φ = 2543301996.

The previous prime is 2543301979. The next prime is 2543302033. The reversal of 2543301997 is 7991033452.

Together with previous prime (2543301979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1916600841 + 626701156 = 43779^2 + 25034^2 .

It is a cyclic number.

It is not a de Polignac number, because 2543301997 - 2⁷ = 2543301869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2543304997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271650998 + 1271650999.

It is an arithmetic number, because the mean of its divisors is an integer number (1271650999).

Almost surely, 2^2543301997 is an apocalyptic number.

It is an amenable number.

2543301997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543301997 is an equidigital number, since it uses as much as digits as its factorization.

2543301997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 2543301997 is about 50431.1609721609. The cubic root of 2543301997 is about 1364.9999771006. Note that the first 4 decimals are identical.

The spelling of 2543301997 in words is "two billion, five hundred forty-three million, three hundred one thousand, nine hundred ninety-seven".