545553 has 6 divisors (see below), whose sum is σ = 788034. Its totient is φ = 363696.

The previous prime is 545551. The next prime is 545579. The reversal of 545553 is 355545.

It can be written as a sum of positive squares in only one way, i.e., 345744 + 199809 = 588^2 + 447^2 .

It is not a de Polignac number, because 545553 - 2¹ = 545551 is a prime.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (545551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30300 + ... + 30317.

It is an arithmetic number, because the mean of its divisors is an integer number (131339).

2⁵⁴⁵⁵⁵³ is an apocalyptic number.

It is an amenable number.

545553 is a deficient number, since it is larger than the sum of its proper divisors (242481).

545553 is a wasteful number, since it uses less digits than its factorization.

545553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60623 (or 60620 counting only the distinct ones).

The product of its digits is 7500, while the sum is 27.

The square root of 545553 is about 738.6155969109. The cubic root of 545553 is about 81.7107097339.

The spelling of 545553 in words is "five hundred forty-five thousand, five hundred fifty-three".