961787171 has 2 divisors, whose sum is σ = 961787172. Its totient is φ = 961787170.

The previous prime is 961787153. The next prime is 961787209. The reversal of 961787171 is 171787169.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (171787169) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 961787171 - 2²⁶ = 894678307 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (961783171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480893585 + 480893586.

It is an arithmetic number, because the mean of its divisors is an integer number (480893586).

Almost surely, 2^961787171 is an apocalyptic number.

961787171 is a deficient number, since it is larger than the sum of its proper divisors (1).

961787171 is an equidigital number, since it uses as much as digits as its factorization.

961787171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148176, while the sum is 47.

The square root of 961787171 is about 31012.6937075772. The cubic root of 961787171 is about 987.0966089605.

The spelling of 961787171 in words is "nine hundred sixty-one million, seven hundred eighty-seven thousand, one hundred seventy-one".