87490211 has 4 divisors (see below), whose sum is σ = 92636712. Its totient is φ = 82343712.

The previous prime is 87490201. The next prime is 87490213. The reversal of 87490211 is 11209478.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87490211 - 2¹⁰ = 87489187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87490213) 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 in 3 ways as a sum of consecutive naturals, for example, 2573225 + ... + 2573258.

It is an arithmetic number, because the mean of its divisors is an integer number (23159178).

Almost surely, 2^87490211 is an apocalyptic number.

87490211 is a deficient number, since it is larger than the sum of its proper divisors (5146501).

87490211 is a wasteful number, since it uses less digits than its factorization.

87490211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5146500.

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

The square root of 87490211 is about 9353.6202082402. The cubic root of 87490211 is about 443.9354446496.

Adding to 87490211 its reverse (11209478), we get a palindrome (98699689).

The spelling of 87490211 in words is "eighty-seven million, four hundred ninety thousand, two hundred eleven".