545626 has 4 divisors (see below), whose sum is σ = 818442. Its totient is φ = 272812.

The previous prime is 545621. The next prime is 545641. The reversal of 545626 is 626545.

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

It can be written as a sum of positive squares in only one way, i.e., 342225 + 203401 = 585^2 + 451^2 .

It is a junction number, because it is equal to n+sod(n) for n = 545594 and 545603.

It is not an unprimeable number, because it can be changed into a prime (545621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136405 + ... + 136408.

2⁵⁴⁵⁶²⁶ is an apocalyptic number.

545626 is a deficient number, since it is larger than the sum of its proper divisors (272816).

545626 is a wasteful number, since it uses less digits than its factorization.

545626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272815.

The product of its digits is 7200, while the sum is 28.

The square root of 545626 is about 738.6650120318. The cubic root of 545626 is about 81.7143541190.

Adding to 545626 its product of digits (7200), we get a triangular number (552826 = T₁₀₅₁).

The spelling of 545626 in words is "five hundred forty-five thousand, six hundred twenty-six".