87048581 has 2 divisors, whose sum is σ = 87048582. Its totient is φ = 87048580.

The previous prime is 87048571. The next prime is 87048593. The reversal of 87048581 is 18584078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81450625 + 5597956 = 9025^2 + 2366^2 .

It is a cyclic number.

It is not a de Polignac number, because 87048581 - 2¹⁸ = 86786437 is a prime.

It is a super-2 number, since 2×87048581² = 15154910908227122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87048571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43524290 + 43524291.

It is an arithmetic number, because the mean of its divisors is an integer number (43524291).

Almost surely, 2^87048581 is an apocalyptic number.

It is an amenable number.

87048581 is a deficient number, since it is larger than the sum of its proper divisors (1).

87048581 is an equidigital number, since it uses as much as digits as its factorization.

87048581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71680, while the sum is 41.

The square root of 87048581 is about 9329.9829045931. The cubic root of 87048581 is about 443.1872237283.

The spelling of 87048581 in words is "eighty-seven million, forty-eight thousand, five hundred eighty-one".