872545771 has 2 divisors, whose sum is σ = 872545772. Its totient is φ = 872545770.

The previous prime is 872545711. The next prime is 872545777. The reversal of 872545771 is 177545278.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 872545771 - 2¹¹ = 872543723 is a prime.

It is a super-2 number, since 2×872545771² = 1522672244979968882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (872545777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436272885 + 436272886.

It is an arithmetic number, because the mean of its divisors is an integer number (436272886).

Almost surely, 2^872545771 is an apocalyptic number.

872545771 is a deficient number, since it is larger than the sum of its proper divisors (1).

872545771 is an equidigital number, since it uses as much as digits as its factorization.

872545771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 548800, while the sum is 46.

The square root of 872545771 is about 29538.8857440493. The cubic root of 872545771 is about 955.5705118841.

It can be divided in two parts, 87254 and 5771, that added together give a square (93025 = 305²).

The spelling of 872545771 in words is "eight hundred seventy-two million, five hundred forty-five thousand, seven hundred seventy-one".