545128 has 8 divisors (see below), whose sum is σ = 1022130. Its totient is φ = 272560.

The previous prime is 545117. The next prime is 545131. The reversal of 545128 is 821545.

It can be written as a sum of positive squares in only one way, i.e., 544644 + 484 = 738^2 + 22^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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, 34063 + ... + 34078.

2⁵⁴⁵¹²⁸ is an apocalyptic number.

It is an amenable number.

545128 is a deficient number, since it is larger than the sum of its proper divisors (477002).

545128 is a wasteful number, since it uses less digits than its factorization.

545128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68147 (or 68143 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 545128 is about 738.3278404611. The cubic root of 545128 is about 81.6894859644.

It can be divided in two parts, 5451 and 28, that multiplied together give a triangular number (152628 = T₅₅₂).

The spelling of 545128 in words is "five hundred forty-five thousand, one hundred twenty-eight".