7216355 has 4 divisors (see below), whose sum is σ = 8659632. Its totient is φ = 5773080.

The previous prime is 7216351. The next prime is 7216357. The reversal of 7216355 is 5536127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5536127 = 1663 ⋅3329.

It is not a de Polignac number, because 7216355 - 2² = 7216351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7216351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721631 + ... + 721640.

It is an arithmetic number, because the mean of its divisors is an integer number (2164908).

Almost surely, 2^7216355 is an apocalyptic number.

7216355 is a deficient number, since it is larger than the sum of its proper divisors (1443277).

7216355 is a wasteful number, since it uses less digits than its factorization.

7216355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443276.

The product of its digits is 6300, while the sum is 29.

The square root of 7216355 is about 2686.3274186145. The cubic root of 7216355 is about 193.2439754184.

The spelling of 7216355 in words is "seven million, two hundred sixteen thousand, three hundred fifty-five".