87091241 has 4 divisors (see below), whose sum is σ = 87115152. Its totient is φ = 87067332.

The previous prime is 87091201. The next prime is 87091253. The reversal of 87091241 is 14219078.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87091241 - 2¹⁰ = 87090217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87091198 and 87091207.

It is not an unprimeable number, because it can be changed into a prime (87091201) 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 in 3 ways as a sum of consecutive naturals, for example, 5231 + ... + 14196.

It is an arithmetic number, because the mean of its divisors is an integer number (21778788).

Almost surely, 2^87091241 is an apocalyptic number.

It is an amenable number.

87091241 is a deficient number, since it is larger than the sum of its proper divisors (23911).

87091241 is a wasteful number, since it uses less digits than its factorization.

87091241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23910.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 87091241 is about 9332.2688023867. The cubic root of 87091241 is about 443.2596096654.

The spelling of 87091241 in words is "eighty-seven million, ninety-one thousand, two hundred forty-one".