722523 has 4 divisors (see below), whose sum is σ = 963368. Its totient is φ = 481680.

The previous prime is 722521. The next prime is 722537. The reversal of 722523 is 325227.

722523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 722523 - 2¹ = 722521 is a prime.

It is a d-powerful number, because it can be written as 7³ + 2¹⁰ + 5⁶ + 2¹² + 2¹⁹ + 3¹¹ .

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 722523.

It is not an unprimeable number, because it can be changed into a prime (722521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120418 + ... + 120423.

It is an arithmetic number, because the mean of its divisors is an integer number (240842).

2⁷²²⁵²³ is an apocalyptic number.

722523 is a deficient number, since it is larger than the sum of its proper divisors (240845).

722523 is a wasteful number, since it uses less digits than its factorization.

722523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240844.

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

The square root of 722523 is about 850.0135293041. The cubic root of 722523 is about 89.7326634784.

The spelling of 722523 in words is "seven hundred twenty-two thousand, five hundred twenty-three".