545533 has 2 divisors, whose sum is σ = 545534. Its totient is φ = 545532.

The previous prime is 545527. The next prime is 545543. The reversal of 545533 is 335545.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 459684 + 85849 = 678^2 + 293^2 .

It is a cyclic number.

It is not a de Polignac number, because 545533 - 2¹⁷ = 414461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 545498 and 545507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272766 + 272767.

It is an arithmetic number, because the mean of its divisors is an integer number (272767).

2⁵⁴⁵⁵³³ is an apocalyptic number.

It is an amenable number.

545533 is a deficient number, since it is larger than the sum of its proper divisors (1).

545533 is an equidigital number, since it uses as much as digits as its factorization.

545533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4500, while the sum is 25.

The square root of 545533 is about 738.6020579446. The cubic root of 545533 is about 81.7097112154.

The spelling of 545533 in words is "five hundred forty-five thousand, five hundred thirty-three".