136254971 has 2 divisors, whose sum is σ = 136254972. Its totient is φ = 136254970.

The previous prime is 136254953. The next prime is 136254991. The reversal of 136254971 is 179452631.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136254971 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136254901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68127485 + 68127486.

It is an arithmetic number, because the mean of its divisors is an integer number (68127486).

Almost surely, 2^136254971 is an apocalyptic number.

136254971 is a deficient number, since it is larger than the sum of its proper divisors (1).

136254971 is an equidigital number, since it uses as much as digits as its factorization.

136254971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 136254971 is about 11672.8304622315. The cubic root of 136254971 is about 514.5774911512.

The spelling of 136254971 in words is "one hundred thirty-six million, two hundred fifty-four thousand, nine hundred seventy-one".