7218253 has 8 divisors (see below), whose sum is σ = 8305280. Its totient is φ = 6145200.

The previous prime is 7218247. The next prime is 7218259. The reversal of 7218253 is 3528127.

It is an interprime number because it is at equal distance from previous prime (7218247) and next prime (7218259).

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

It is a cyclic number.

It is not a de Polignac number, because 7218253 - 2⁵ = 7218221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7218259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2358 + ... + 4471.

It is an arithmetic number, because the mean of its divisors is an integer number (1038160).

Almost surely, 2^7218253 is an apocalyptic number.

It is an amenable number.

7218253 is a deficient number, since it is larger than the sum of its proper divisors (1087027).

7218253 is a wasteful number, since it uses less digits than its factorization.

7218253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6987.

The product of its digits is 3360, while the sum is 28.

The square root of 7218253 is about 2686.6806658031. The cubic root of 7218253 is about 193.2609158689.

The spelling of 7218253 in words is "seven million, two hundred eighteen thousand, two hundred fifty-three".