545729 has 4 divisors (see below), whose sum is σ = 547584. Its totient is φ = 543876.

The previous prime is 545723. The next prime is 545731. The reversal of 545729 is 927545.

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 545729 - 2⁸ = 545473 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 545695 and 545704.

It is not an unprimeable number, because it can be changed into a prime (545723) 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, 377 + ... + 1110.

It is an arithmetic number, because the mean of its divisors is an integer number (136896).

2⁵⁴⁵⁷²⁹ is an apocalyptic number.

It is an amenable number.

545729 is a deficient number, since it is larger than the sum of its proper divisors (1855).

545729 is a wasteful number, since it uses less digits than its factorization.

545729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854.

The product of its digits is 12600, while the sum is 32.

The square root of 545729 is about 738.7347291146. The cubic root of 545729 is about 81.7194956439.

The spelling of 545729 in words is "five hundred forty-five thousand, seven hundred twenty-nine".