6972521249 has 2 divisors, whose sum is σ = 6972521250. Its totient is φ = 6972521248.

The previous prime is 6972521201. The next prime is 6972521263. The reversal of 6972521249 is 9421252796.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4330561249 + 2641960000 = 65807^2 + 51400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6972521249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6972541249) 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, 3486260624 + 3486260625.

It is an arithmetic number, because the mean of its divisors is an integer number (3486260625).

Almost surely, 2^6972521249 is an apocalyptic number.

It is an amenable number.

6972521249 is a deficient number, since it is larger than the sum of its proper divisors (1).

6972521249 is an equidigital number, since it uses as much as digits as its factorization.

6972521249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 47.

The square root of 6972521249 is about 83501.6242297118. The cubic root of 6972521249 is about 1910.4248069664.

The spelling of 6972521249 in words is "six billion, nine hundred seventy-two million, five hundred twenty-one thousand, two hundred forty-nine".