872407171 has 2 divisors, whose sum is σ = 872407172. Its totient is φ = 872407170.

The previous prime is 872407153. The next prime is 872407183. The reversal of 872407171 is 171704278.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 872407171 - 2¹⁷ = 872276099 is a prime.

It is a super-2 number, since 2×872407171² = 1522188544024446482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 872407171.

It is not a weakly prime, because it can be changed into another prime (872407111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436203585 + 436203586.

It is an arithmetic number, because the mean of its divisors is an integer number (436203586).

Almost surely, 2^872407171 is an apocalyptic number.

872407171 is a deficient number, since it is larger than the sum of its proper divisors (1).

872407171 is an equidigital number, since it uses as much as digits as its factorization.

872407171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21952, while the sum is 37.

The square root of 872407171 is about 29536.5395908187. The cubic root of 872407171 is about 955.5199131684.

The spelling of 872407171 in words is "eight hundred seventy-two million, four hundred seven thousand, one hundred seventy-one".