87012241 has 2 divisors, whose sum is σ = 87012242. Its totient is φ = 87012240.

The previous prime is 87012227. The next prime is 87012251. The reversal of 87012241 is 14221078.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69372241 + 17640000 = 8329^2 + 4200^2 .

It is a cyclic number.

It is not a de Polignac number, because 87012241 - 2⁷ = 87012113 is a prime.

It is a super-2 number, since 2×87012241² = 15142260167684162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87012221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43506120 + 43506121.

It is an arithmetic number, because the mean of its divisors is an integer number (43506121).

Almost surely, 2^87012241 is an apocalyptic number.

It is an amenable number.

87012241 is a deficient number, since it is larger than the sum of its proper divisors (1).

87012241 is an equidigital number, since it uses as much as digits as its factorization.

87012241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 87012241 is about 9328.0352164858. The cubic root of 87012241 is about 443.1255429779.

The spelling of 87012241 in words is "eighty-seven million, twelve thousand, two hundred forty-one".