545074 has 4 divisors (see below), whose sum is σ = 817614. Its totient is φ = 272536.

The previous prime is 545063. The next prime is 545087. The reversal of 545074 is 470545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 470545 = 5 ⋅94109.

It can be written as a sum of positive squares in only one way, i.e., 390625 + 154449 = 625^2 + 393^2 .

It is an alternating number because its digits alternate between odd and even.

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, 136267 + ... + 136270.

2⁵⁴⁵⁰⁷⁴ is an apocalyptic number.

545074 is a deficient number, since it is larger than the sum of its proper divisors (272540).

545074 is a wasteful number, since it uses less digits than its factorization.

545074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272539.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 545074 is about 738.2912704346. The cubic root of 545074 is about 81.6867885075.

Subtracting from 545074 its reverse (470545), we obtain a square (74529 = 273²).

The spelling of 545074 in words is "five hundred forty-five thousand, seventy-four".