545897 has 4 divisors (see below), whose sum is σ = 595536. Its totient is φ = 496260.

The previous prime is 545893. The next prime is 545899. The reversal of 545897 is 798545.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 545897 - 2² = 545893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 545897.

It is not an unprimeable number, because it can be changed into a prime (545893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24803 + ... + 24824.

It is an arithmetic number, because the mean of its divisors is an integer number (148884).

2⁵⁴⁵⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

545897 is a deficient number, since it is larger than the sum of its proper divisors (49639).

545897 is a wasteful number, since it uses less digits than its factorization.

545897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49638.

The product of its digits is 50400, while the sum is 38.

The square root of 545897 is about 738.8484282991. The cubic root of 545897 is about 81.7278804324.

It can be divided in two parts, 5458 and 97, that added together give a palindrome (5555).

The spelling of 545897 in words is "five hundred forty-five thousand, eight hundred ninety-seven".