87043147 has 2 divisors, whose sum is σ = 87043148. Its totient is φ = 87043146.

The previous prime is 87043091. The next prime is 87043163. The reversal of 87043147 is 74134078.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87043147 - 2¹¹ = 87041099 is a prime.

It is not a weakly prime, because it can be changed into another prime (87043447) 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, 43521573 + 43521574.

It is an arithmetic number, because the mean of its divisors is an integer number (43521574).

Almost surely, 2^87043147 is an apocalyptic number.

87043147 is the 5387-th hex number.

87043147 is a deficient number, since it is larger than the sum of its proper divisors (1).

87043147 is an equidigital number, since it uses as much as digits as its factorization.

87043147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 87043147 is about 9329.6916883678. The cubic root of 87043147 is about 443.1780015619.

The spelling of 87043147 in words is "eighty-seven million, forty-three thousand, one hundred forty-seven".