87887143 has 2 divisors, whose sum is σ = 87887144. Its totient is φ = 87887142.

The previous prime is 87887101. The next prime is 87887207. The reversal of 87887143 is 34178878.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87887143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87887093 and 87887102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87887243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43943571 + 43943572.

It is an arithmetic number, because the mean of its divisors is an integer number (43943572).

Almost surely, 2^87887143 is an apocalyptic number.

87887143 is a deficient number, since it is larger than the sum of its proper divisors (1).

87887143 is an equidigital number, since it uses as much as digits as its factorization.

87887143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 301056, while the sum is 46.

The square root of 87887143 is about 9374.8142914940. The cubic root of 87887143 is about 444.6057915277.

It can be divided in two parts, 8788 and 7143, that added together give a triangular number (15931 = T₁₇₈).

The spelling of 87887143 in words is "eighty-seven million, eight hundred eighty-seven thousand, one hundred forty-three".