8216455 has 16 divisors (see below), whose sum is σ = 11178720. Its totient is φ = 5747328.

The previous prime is 8216447. The next prime is 8216459. The reversal of 8216455 is 5546128.

It is a cyclic number.

It is not a de Polignac number, because 8216455 - 2³ = 8216447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8216459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2092 + ... + 4561.

It is an arithmetic number, because the mean of its divisors is an integer number (698670).

Almost surely, 2^8216455 is an apocalyptic number.

8216455 is a deficient number, since it is larger than the sum of its proper divisors (2962265).

8216455 is a wasteful number, since it uses less digits than its factorization.

8216455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6690.

The product of its digits is 9600, while the sum is 31.

The square root of 8216455 is about 2866.4359403273. The cubic root of 8216455 is about 201.7877635584.

The spelling of 8216455 in words is "eight million, two hundred sixteen thousand, four hundred fifty-five".