545854 has 4 divisors (see below), whose sum is σ = 818784. Its totient is φ = 272926.

The previous prime is 545843. The next prime is 545863. The reversal of 545854 is 458545.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136462 + ... + 136465.

It is an arithmetic number, because the mean of its divisors is an integer number (204696).

2⁵⁴⁵⁸⁵⁴ is an apocalyptic number.

545854 is a deficient number, since it is larger than the sum of its proper divisors (272930).

545854 is a wasteful number, since it uses less digits than its factorization.

545854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272929.

The product of its digits is 16000, while the sum is 31.

The square root of 545854 is about 738.8193283882. The cubic root of 545854 is about 81.7257344896.

The spelling of 545854 in words is "five hundred forty-five thousand, eight hundred fifty-four".