722550 has 24 divisors (see below), whose sum is σ = 1792296. Its totient is φ = 192640.

The previous prime is 722539. The next prime is 722563. The reversal of 722550 is 55227.

722550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

722550 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2259 + ... + 2558.

It is an arithmetic number, because the mean of its divisors is an integer number (74679).

2⁷²²⁵⁵⁰ is an apocalyptic number.

722550 is an abundant number, since it is smaller than the sum of its proper divisors (1069746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

722550 is a wasteful number, since it uses less digits than its factorization.

722550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4832 (or 4827 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 21.

The square root of 722550 is about 850.0294112559. The cubic root of 722550 is about 89.7337812061.

Adding to 722550 its reverse (55227), we get a palindrome (777777).

The spelling of 722550 in words is "seven hundred twenty-two thousand, five hundred fifty".