545554 has 4 divisors (see below), whose sum is σ = 818334. Its totient is φ = 272776.

The previous prime is 545551. The next prime is 545579. The reversal of 545554 is 455545.

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., 540225 + 5329 = 735^2 + 73^2 .

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 as a sum of consecutive naturals, namely, 136387 + ... + 136390.

2⁵⁴⁵⁵⁵⁴ is an apocalyptic number.

545554 is a deficient number, since it is larger than the sum of its proper divisors (272780).

545554 is a wasteful number, since it uses less digits than its factorization.

545554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272779.

The product of its digits is 10000, while the sum is 28.

The square root of 545554 is about 738.6162738527. The cubic root of 545554 is about 81.7107596591.

Subtracting from 545554 its reverse (455545), we obtain a palindrome (90009).

The spelling of 545554 in words is "five hundred forty-five thousand, five hundred fifty-four".