87351281 has 2 divisors, whose sum is σ = 87351282. Its totient is φ = 87351280.

The previous prime is 87351259. The next prime is 87351283. The reversal of 87351281 is 18215378.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60217600 + 27133681 = 7760^2 + 5209^2 .

It is a cyclic number.

It is not a de Polignac number, because 87351281 - 2¹⁰ = 87350257 is a prime.

It is a super-2 number, since 2×87351281² = 15260492584681922, which contains 22 as substring.

Together with 87351283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87351283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43675640 + 43675641.

It is an arithmetic number, because the mean of its divisors is an integer number (43675641).

Almost surely, 2^87351281 is an apocalyptic number.

It is an amenable number.

87351281 is a deficient number, since it is larger than the sum of its proper divisors (1).

87351281 is an equidigital number, since it uses as much as digits as its factorization.

87351281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 35.

The square root of 87351281 is about 9346.1907213581. The cubic root of 87351281 is about 443.7003378662.

The spelling of 87351281 in words is "eighty-seven million, three hundred fifty-one thousand, two hundred eighty-one".