545758 has 4 divisors (see below), whose sum is σ = 818640. Its totient is φ = 272878.

The previous prime is 545749. The next prime is 545759. The reversal of 545758 is 857545.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545759) by changing a digit.

545758 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136438 + ... + 136441.

It is an arithmetic number, because the mean of its divisors is an integer number (204660).

2⁵⁴⁵⁷⁵⁸ is an apocalyptic number.

545758 is a deficient number, since it is larger than the sum of its proper divisors (272882).

545758 is a wasteful number, since it uses less digits than its factorization.

545758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272881.

The product of its digits is 28000, while the sum is 34.

The square root of 545758 is about 738.7543570091. The cubic root of 545758 is about 81.7209431409.

The spelling of 545758 in words is "five hundred forty-five thousand, seven hundred fifty-eight".