87143801 has 2 divisors, whose sum is σ = 87143802. Its totient is φ = 87143800.

The previous prime is 87143743. The next prime is 87143809. The reversal of 87143801 is 10834178.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86471401 + 672400 = 9299^2 + 820^2 .

It is a cyclic number.

It is not a de Polignac number, because 87143801 - 2¹⁰ = 87142777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87143809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43571900 + 43571901.

It is an arithmetic number, because the mean of its divisors is an integer number (43571901).

Almost surely, 2^87143801 is an apocalyptic number.

It is an amenable number.

87143801 is a deficient number, since it is larger than the sum of its proper divisors (1).

87143801 is an equidigital number, since it uses as much as digits as its factorization.

87143801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 87143801 is about 9335.0844131159. The cubic root of 87143801 is about 443.3487615312.

Adding to 87143801 its reverse (10834178), we get a palindrome (97977979).

The spelling of 87143801 in words is "eighty-seven million, one hundred forty-three thousand, eight hundred one".