87061529 has 2 divisors, whose sum is σ = 87061530. Its totient is φ = 87061528.

The previous prime is 87061489. The next prime is 87061613. The reversal of 87061529 is 92516078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68095504 + 18966025 = 8252^2 + 4355^2 .

It is a cyclic number.

It is not a de Polignac number, because 87061529 - 2¹² = 87057433 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 87061492 and 87061501.

It is not a weakly prime, because it can be changed into another prime (87061129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43530764 + 43530765.

It is an arithmetic number, because the mean of its divisors is an integer number (43530765).

Almost surely, 2^87061529 is an apocalyptic number.

It is an amenable number.

87061529 is a deficient number, since it is larger than the sum of its proper divisors (1).

87061529 is an equidigital number, since it uses as much as digits as its factorization.

87061529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 87061529 is about 9330.6767707386. The cubic root of 87061529 is about 443.2091965302.

The spelling of 87061529 in words is "eighty-seven million, sixty-one thousand, five hundred twenty-nine".