2546247997 has 2 divisors, whose sum is σ = 2546247998. Its totient is φ = 2546247996.

The previous prime is 2546247943. The next prime is 2546248027. The reversal of 2546247997 is 7997426452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1725654681 + 820593316 = 41541^2 + 28646^2 .

It is a cyclic number.

It is not a de Polignac number, because 2546247997 - 2¹⁹ = 2545723709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2546245997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1273123998 + 1273123999.

It is an arithmetic number, because the mean of its divisors is an integer number (1273123999).

Almost surely, 2^2546247997 is an apocalyptic number.

It is an amenable number.

2546247997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2546247997 is an equidigital number, since it uses as much as digits as its factorization.

2546247997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 55.

The square root of 2546247997 is about 50460.3606507128. The cubic root of 2546247997 is about 1365.5268169158.

The spelling of 2546247997 in words is "two billion, five hundred forty-six million, two hundred forty-seven thousand, nine hundred ninety-seven".