87445211 has 4 divisors (see below), whose sum is σ = 99937392. Its totient is φ = 74953032.

The previous prime is 87445181. The next prime is 87445217. The reversal of 87445211 is 11254478.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-87445211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87445217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6246080 + ... + 6246093.

It is an arithmetic number, because the mean of its divisors is an integer number (24984348).

Almost surely, 2^87445211 is an apocalyptic number.

87445211 is a deficient number, since it is larger than the sum of its proper divisors (12492181).

87445211 is a wasteful number, since it uses less digits than its factorization.

87445211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12492180.

The product of its digits is 8960, while the sum is 32.

The square root of 87445211 is about 9351.2144131123. The cubic root of 87445211 is about 443.8593198626.

Adding to 87445211 its reverse (11254478), we get a palindrome (98699689).

The spelling of 87445211 in words is "eighty-seven million, four hundred forty-five thousand, two hundred eleven".