87512897 has 2 divisors, whose sum is σ = 87512898. Its totient is φ = 87512896.

The previous prime is 87512851. The next prime is 87512933. The reversal of 87512897 is 79821578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50922496 + 36590401 = 7136^2 + 6049^2 .

It is a cyclic number.

It is not a de Polignac number, because 87512897 - 2⁶ = 87512833 is a prime.

It is not a weakly prime, because it can be changed into another prime (87512297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43756448 + 43756449.

It is an arithmetic number, because the mean of its divisors is an integer number (43756449).

Almost surely, 2^87512897 is an apocalyptic number.

It is an amenable number.

87512897 is a deficient number, since it is larger than the sum of its proper divisors (1).

87512897 is an equidigital number, since it uses as much as digits as its factorization.

87512897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 47.

The square root of 87512897 is about 9354.8328151817. The cubic root of 87512897 is about 443.9738117958.

The spelling of 87512897 in words is "eighty-seven million, five hundred twelve thousand, eight hundred ninety-seven".