1297252471 has 2 divisors, whose sum is σ = 1297252472. Its totient is φ = 1297252470.

The previous prime is 1297252457. The next prime is 1297252477. The reversal of 1297252471 is 1742527921.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1297252471 is a prime.

It is a super-3 number, since 3×1297252471³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1297252477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648626235 + 648626236.

It is an arithmetic number, because the mean of its divisors is an integer number (648626236).

Almost surely, 2^1297252471 is an apocalyptic number.

1297252471 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297252471 is an equidigital number, since it uses as much as digits as its factorization.

1297252471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 40.

The square root of 1297252471 is about 36017.3912297934. The cubic root of 1297252471 is about 1090.6234603427.

The spelling of 1297252471 in words is "one billion, two hundred ninety-seven million, two hundred fifty-two thousand, four hundred seventy-one".