9971254507 has 2 divisors, whose sum is σ = 9971254508. Its totient is φ = 9971254506.

The previous prime is 9971254499. The next prime is 9971254523. The reversal of 9971254507 is 7054521799.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9971254507 - 2³ = 9971254499 is a prime.

It is not a weakly prime, because it can be changed into another prime (9971254567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4985627253 + 4985627254.

It is an arithmetic number, because the mean of its divisors is an integer number (4985627254).

Almost surely, 2^9971254507 is an apocalyptic number.

9971254507 is a deficient number, since it is larger than the sum of its proper divisors (1).

9971254507 is an equidigital number, since it uses as much as digits as its factorization.

9971254507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 793800, while the sum is 49.

The square root of 9971254507 is about 99856.1690983587. The cubic root of 9971254507 is about 2152.3683659384.

The spelling of 9971254507 in words is "nine billion, nine hundred seventy-one million, two hundred fifty-four thousand, five hundred seven".