87107513 has 2 divisors, whose sum is σ = 87107514. Its totient is φ = 87107512.

The previous prime is 87107407. The next prime is 87107543. The reversal of 87107513 is 31570178.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64192144 + 22915369 = 8012^2 + 4787^2 .

It is a cyclic number.

It is not a de Polignac number, because 87107513 - 2¹⁰ = 87106489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87107513.

It is not a weakly prime, because it can be changed into another prime (87107543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43553756 + 43553757.

It is an arithmetic number, because the mean of its divisors is an integer number (43553757).

Almost surely, 2^87107513 is an apocalyptic number.

It is an amenable number.

87107513 is a deficient number, since it is larger than the sum of its proper divisors (1).

87107513 is an equidigital number, since it uses as much as digits as its factorization.

87107513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 87107513 is about 9333.1405753905. The cubic root of 87107513 is about 443.2872139385.

The spelling of 87107513 in words is "eighty-seven million, one hundred seven thousand, five hundred thirteen".