87124871 has 2 divisors, whose sum is σ = 87124872. Its totient is φ = 87124870.

The previous prime is 87124811. The next prime is 87124879. The reversal of 87124871 is 17842178.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87124871 - 2¹⁰ = 87123847 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 (87124879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43562435 + 43562436.

It is an arithmetic number, because the mean of its divisors is an integer number (43562436).

Almost surely, 2^87124871 is an apocalyptic number.

87124871 is a deficient number, since it is larger than the sum of its proper divisors (1).

87124871 is an equidigital number, since it uses as much as digits as its factorization.

87124871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25088, while the sum is 38.

The square root of 87124871 is about 9334.0704411312. The cubic root of 87124871 is about 443.3166567429.

The spelling of 87124871 in words is "eighty-seven million, one hundred twenty-four thousand, eight hundred seventy-one".