7220255 has 16 divisors (see below), whose sum is σ = 10053120. Its totient is φ = 4875552.

The previous prime is 7220249. The next prime is 7220261. The reversal of 7220255 is 5520227.

It is an interprime number because it is at equal distance from previous prime (7220249) and next prime (7220261).

It is a cyclic number.

It is not a de Polignac number, because 7220255 - 2¹² = 7216159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7220255.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 806 + ... + 3884.

It is an arithmetic number, because the mean of its divisors is an integer number (628320).

Almost surely, 2^7220255 is an apocalyptic number.

7220255 is a deficient number, since it is larger than the sum of its proper divisors (2832865).

7220255 is a wasteful number, since it uses less digits than its factorization.

7220255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158.

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 7220255 is about 2687.0532186765. The cubic root of 7220255 is about 193.2787813455.

The spelling of 7220255 in words is "seven million, two hundred twenty thousand, two hundred fifty-five".