722253 has 16 divisors (see below), whose sum is σ = 1112576. Its totient is φ = 408240.

The previous prime is 722243. The next prime is 722257. The reversal of 722253 is 352227.

It is not a de Polignac number, because 722253 - 2⁴ = 722237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a d-powerful number, because it can be written as 7⁶ + 2² + 2¹⁸ + 2¹⁸ + 5⁷ + 3⁷ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722257) 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, 3318 + ... + 3528.

It is an arithmetic number, because the mean of its divisors is an integer number (69536).

2⁷²²²⁵³ is an apocalyptic number.

It is an amenable number.

722253 is a deficient number, since it is larger than the sum of its proper divisors (390323).

722253 is a wasteful number, since it uses less digits than its factorization.

722253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384.

The product of its digits is 840, while the sum is 21.

The square root of 722253 is about 849.8546934624. The cubic root of 722253 is about 89.7214846704.

The spelling of 722253 in words is "seven hundred twenty-two thousand, two hundred fifty-three".