7971275497 has 2 divisors, whose sum is σ = 7971275498. Its totient is φ = 7971275496.

The previous prime is 7971275483. The next prime is 7971275567. The reversal of 7971275497 is 7945721797.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7263130176 + 708145321 = 85224^2 + 26611^2 .

It is a cyclic number.

It is not a de Polignac number, because 7971275497 - 2²⁷ = 7837057769 is a prime.

It is a super-3 number, since 3×7971275497³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (7971275437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3985637748 + 3985637749.

It is an arithmetic number, because the mean of its divisors is an integer number (3985637749).

Almost surely, 2^7971275497 is an apocalyptic number.

It is an amenable number.

7971275497 is a deficient number, since it is larger than the sum of its proper divisors (1).

7971275497 is an equidigital number, since it uses as much as digits as its factorization.

7971275497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7779240, while the sum is 58.

The square root of 7971275497 is about 89281.9998487937. Note that the first 3 decimals coincide. The cubic root of 7971275497 is about 1997.6034207677.

The spelling of 7971275497 in words is "seven billion, nine hundred seventy-one million, two hundred seventy-five thousand, four hundred ninety-seven".