545474 has 4 divisors (see below), whose sum is σ = 818214. Its totient is φ = 272736.

The previous prime is 545473. The next prime is 545477. The reversal of 545474 is 474545.

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., 310249 + 235225 = 557^2 + 485^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (545473) 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, 136367 + ... + 136370.

2⁵⁴⁵⁴⁷⁴ is an apocalyptic number.

545474 is a deficient number, since it is larger than the sum of its proper divisors (272740).

545474 is a wasteful number, since it uses less digits than its factorization.

545474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272739.

The product of its digits is 11200, while the sum is 29.

The square root of 545474 is about 738.5621165481. The cubic root of 545474 is about 81.7067654439.

The spelling of 545474 in words is "five hundred forty-five thousand, four hundred seventy-four".