722553 has 16 divisors (see below), whose sum is σ = 1053696. Its totient is φ = 437760.

The previous prime is 722539. The next prime is 722563. The reversal of 722553 is 355227.

722553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 722553 - 2⁴ = 722537 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 722553.

It is not an unprimeable number, because it can be changed into a prime (722563) 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, 3688 + ... + 3878.

It is an arithmetic number, because the mean of its divisors is an integer number (65856).

2⁷²²⁵⁵³ is an apocalyptic number.

It is an amenable number.

722553 is a deficient number, since it is larger than the sum of its proper divisors (331143).

722553 is a wasteful number, since it uses less digits than its factorization.

722553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304.

The product of its digits is 2100, while the sum is 24.

The square root of 722553 is about 850.0311758989. The cubic root of 722553 is about 89.7339053963.

It can be divided in two parts, 722 and 553, that added together give a triangular number (1275 = T₅₀).

The spelling of 722553 in words is "seven hundred twenty-two thousand, five hundred fifty-three".