82218453 has 8 divisors (see below), whose sum is σ = 115394400. Its totient is φ = 51927408.

The previous prime is 82218449. The next prime is 82218457. The reversal of 82218453 is 35481228.

It is an interprime number because it is at equal distance from previous prime (82218449) and next prime (82218457).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82218453 - 2² = 82218449 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82218457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721158 + ... + 721271.

It is an arithmetic number, because the mean of its divisors is an integer number (14424300).

Almost surely, 2^82218453 is an apocalyptic number.

It is an amenable number.

82218453 is a deficient number, since it is larger than the sum of its proper divisors (33175947).

82218453 is a wasteful number, since it uses less digits than its factorization.

82218453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442451.

The product of its digits is 15360, while the sum is 33.

The square root of 82218453 is about 9067.4391643948. The cubic root of 82218453 is about 434.8336052720.

The spelling of 82218453 in words is "eighty-two million, two hundred eighteen thousand, four hundred fifty-three".