887171557 has 2 divisors, whose sum is σ = 887171558. Its totient is φ = 887171556.

The previous prime is 887171521. The next prime is 887171569. The reversal of 887171557 is 755171788.

887171557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 885717121 + 1454436 = 29761^2 + 1206^2 .

It is a cyclic number.

It is not a de Polignac number, because 887171557 - 2⁷ = 887171429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 887171557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (887175557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 443585778 + 443585779.

It is an arithmetic number, because the mean of its divisors is an integer number (443585779).

Almost surely, 2^887171557 is an apocalyptic number.

It is an amenable number.

887171557 is a deficient number, since it is larger than the sum of its proper divisors (1).

887171557 is an equidigital number, since it uses as much as digits as its factorization.

887171557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 548800, while the sum is 49.

The square root of 887171557 is about 29785.4252445722. The cubic root of 887171557 is about 960.8801090471.

The spelling of 887171557 in words is "eight hundred eighty-seven million, one hundred seventy-one thousand, five hundred fifty-seven".