872216541 has 12 divisors (see below), whose sum is σ = 1439849632. Its totient is φ = 498409416.

The previous prime is 872216537. The next prime is 872216551. The reversal of 872216541 is 145612278.

872216541 is a `hidden beast` number, since 87 + 22 + 16 + 541 = 666.

It is not a de Polignac number, because 872216541 - 2² = 872216537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 872216496 and 872216505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872216551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6922291 + ... + 6922416.

Almost surely, 2^872216541 is an apocalyptic number.

It is an amenable number.

872216541 is a deficient number, since it is larger than the sum of its proper divisors (567633091).

872216541 is a wasteful number, since it uses less digits than its factorization.

872216541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13844720 (or 13844717 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 872216541 is about 29533.3123946502. The cubic root of 872216541 is about 955.4503111003.

The spelling of 872216541 in words is "eight hundred seventy-two million, two hundred sixteen thousand, five hundred forty-one".