87470375257 has 2 divisors, whose sum is σ = 87470375258. Its totient is φ = 87470375256.

The previous prime is 87470375243. The next prime is 87470375303. The reversal of 87470375257 is 75257307478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67897246041 + 19573129216 = 260571^2 + 139904^2 .

It is a cyclic number.

It is not a de Polignac number, because 87470375257 - 2¹¹ = 87470373209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87470375198 and 87470375207.

It is not a weakly prime, because it can be changed into another prime (87470375227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43735187628 + 43735187629.

It is an arithmetic number, because the mean of its divisors is an integer number (43735187629).

Almost surely, 2^87470375257 is an apocalyptic number.

It is an amenable number.

87470375257 is a deficient number, since it is larger than the sum of its proper divisors (1).

87470375257 is an equidigital number, since it uses as much as digits as its factorization.

87470375257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11524800, while the sum is 55.

The spelling of 87470375257 in words is "eighty-seven billion, four hundred seventy million, three hundred seventy-five thousand, two hundred fifty-seven".