545722 has 12 divisors (see below), whose sum is σ = 855630. Its totient is φ = 260736.

The previous prime is 545711. The next prime is 545723. The reversal of 545722 is 227545.

545722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 450241 + 95481 = 671^2 + 309^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (545723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5578 + ... + 5674.

2⁵⁴⁵⁷²² is an apocalyptic number.

545722 is a deficient number, since it is larger than the sum of its proper divisors (309908).

545722 is an equidigital number, since it uses as much as digits as its factorization.

545722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 128 counting only the distinct ones).

The product of its digits is 2800, while the sum is 25.

The square root of 545722 is about 738.7299912688. The cubic root of 545722 is about 81.7191462403.

It can be divided in two parts, 54 and 5722, that added together give a square (5776 = 76²).

The spelling of 545722 in words is "five hundred forty-five thousand, seven hundred twenty-two".