87171527 has 2 divisors, whose sum is σ = 87171528. Its totient is φ = 87171526.

The previous prime is 87171517. The next prime is 87171559. The reversal of 87171527 is 72517178.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87171527 - 2⁶ = 87171463 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87171517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43585763 + 43585764.

It is an arithmetic number, because the mean of its divisors is an integer number (43585764).

Almost surely, 2^87171527 is an apocalyptic number.

87171527 is a deficient number, since it is larger than the sum of its proper divisors (1).

87171527 is an equidigital number, since it uses as much as digits as its factorization.

87171527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27440, while the sum is 38.

The square root of 87171527 is about 9336.5693378243. The cubic root of 87171527 is about 443.3957757161.

The spelling of 87171527 in words is "eighty-seven million, one hundred seventy-one thousand, five hundred twenty-seven".