156704971 has 2 divisors, whose sum is σ = 156704972. Its totient is φ = 156704970.

The previous prime is 156704927. The next prime is 156704983. The reversal of 156704971 is 179407651.

It is a strong prime.

It is an emirp because it is prime and its reverse (179407651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 156704971 - 2⁹ = 156704459 is a prime.

It is a super-2 number, since 2×156704971² = 49112895872221682, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (156702971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78352485 + 78352486.

It is an arithmetic number, because the mean of its divisors is an integer number (78352486).

Almost surely, 2^156704971 is an apocalyptic number.

156704971 is a deficient number, since it is larger than the sum of its proper divisors (1).

156704971 is an equidigital number, since it uses as much as digits as its factorization.

156704971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 156704971 is about 12518.1856113416. The cubic root of 156704971 is about 539.1309420810.

The spelling of 156704971 in words is "one hundred fifty-six million, seven hundred four thousand, nine hundred seventy-one".