8216553 has 16 divisors (see below), whose sum is σ = 11406080. Its totient is φ = 5256576.

The previous prime is 8216539. The next prime is 8216557. The reversal of 8216553 is 3556128.

It is not a de Polignac number, because 8216553 - 2⁵ = 8216521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8216553.

It is not an unprimeable number, because it can be changed into a prime (8216557) 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 15 ways as a sum of consecutive naturals, for example, 8301 + ... + 9237.

It is an arithmetic number, because the mean of its divisors is an integer number (712880).

Almost surely, 2^8216553 is an apocalyptic number.

It is an amenable number.

8216553 is a deficient number, since it is larger than the sum of its proper divisors (3189527).

8216553 is a wasteful number, since it uses less digits than its factorization.

8216553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056.

The product of its digits is 7200, while the sum is 30.

The square root of 8216553 is about 2866.4530346754. The cubic root of 8216553 is about 201.7885658153.

The spelling of 8216553 in words is "eight million, two hundred sixteen thousand, five hundred fifty-three".