87044281 has 2 divisors, whose sum is σ = 87044282. Its totient is φ = 87044280.

The previous prime is 87044273. The next prime is 87044327. The reversal of 87044281 is 18244078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85377600 + 1666681 = 9240^2 + 1291^2 .

It is a cyclic number.

It is not a de Polignac number, because 87044281 - 2³ = 87044273 is a prime.

It is a super-2 number, since 2×87044281² = 15153413709613922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87041281) 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, 43522140 + 43522141.

It is an arithmetic number, because the mean of its divisors is an integer number (43522141).

Almost surely, 2^87044281 is an apocalyptic number.

It is an amenable number.

87044281 is a deficient number, since it is larger than the sum of its proper divisors (1).

87044281 is an equidigital number, since it uses as much as digits as its factorization.

87044281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 87044281 is about 9329.7524618824. The cubic root of 87044281 is about 443.1799261311.

The spelling of 87044281 in words is "eighty-seven million, forty-four thousand, two hundred eighty-one".