545739 has 4 divisors (see below), whose sum is σ = 727656. Its totient is φ = 363824.

The previous prime is 545731. The next prime is 545747. The reversal of 545739 is 937545.

545739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (545731) and next prime (545747).

It is a cyclic number.

It is not a de Polignac number, because 545739 - 2³ = 545731 is a prime.

It is a super-2 number, since 2×545739² = 595662112242, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (545731) 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, 90954 + ... + 90959.

It is an arithmetic number, because the mean of its divisors is an integer number (181914).

2⁵⁴⁵⁷³⁹ is an apocalyptic number.

545739 is a deficient number, since it is larger than the sum of its proper divisors (181917).

545739 is a wasteful number, since it uses less digits than its factorization.

545739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181916.

The product of its digits is 18900, while the sum is 33.

The square root of 545739 is about 738.7414974130. The cubic root of 545739 is about 81.7199947866.

The spelling of 545739 in words is "five hundred forty-five thousand, seven hundred thirty-nine".