87162857 has 2 divisors, whose sum is σ = 87162858. Its totient is φ = 87162856.

The previous prime is 87162851. The next prime is 87162919. The reversal of 87162857 is 75826178.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77774761 + 9388096 = 8819^2 + 3064^2 .

It is a cyclic number.

It is not a de Polignac number, because 87162857 - 2⁸ = 87162601 is a prime.

It is not a weakly prime, because it can be changed into another prime (87162851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43581428 + 43581429.

It is an arithmetic number, because the mean of its divisors is an integer number (43581429).

Almost surely, 2^87162857 is an apocalyptic number.

It is an amenable number.

87162857 is a deficient number, since it is larger than the sum of its proper divisors (1).

87162857 is an equidigital number, since it uses as much as digits as its factorization.

87162857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188160, while the sum is 44.

The square root of 87162857 is about 9336.1050229740. The cubic root of 87162857 is about 443.3810753166.

The spelling of 87162857 in words is "eighty-seven million, one hundred sixty-two thousand, eight hundred fifty-seven".