545857 has 8 divisors (see below), whose sum is σ = 593600. Its totient is φ = 498960.

The previous prime is 545843. The next prime is 545863. The reversal of 545857 is 758545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 545857 - 2¹⁹ = 21569 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (545827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2482 + ... + 2692.

It is an arithmetic number, because the mean of its divisors is an integer number (74200).

2⁵⁴⁵⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

545857 is a deficient number, since it is larger than the sum of its proper divisors (47743).

545857 is a wasteful number, since it uses less digits than its factorization.

545857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423.

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

The square root of 545857 is about 738.8213586517. The cubic root of 545857 is about 81.7258842102.

The spelling of 545857 in words is "five hundred forty-five thousand, eight hundred fifty-seven".