545719 has 4 divisors (see below), whose sum is σ = 550144. Its totient is φ = 541296.

The previous prime is 545711. The next prime is 545723. The reversal of 545719 is 917545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 917545 = 5 ⋅183509.

It is a cyclic number.

It is not a de Polignac number, because 545719 - 2³ = 545711 is a prime.

It is a super-2 number, since 2×545719² = 595618453922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545711) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2022 + ... + 2275.

It is an arithmetic number, because the mean of its divisors is an integer number (137536).

2⁵⁴⁵⁷¹⁹ is an apocalyptic number.

545719 is a deficient number, since it is larger than the sum of its proper divisors (4425).

545719 is a wasteful number, since it uses less digits than its factorization.

545719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4424.

The product of its digits is 6300, while the sum is 31.

The square root of 545719 is about 738.7279607542. The cubic root of 545719 is about 81.7189964951.

It can be divided in two parts, 5457 and 19, that added together give a square (5476 = 74²).

The spelling of 545719 in words is "five hundred forty-five thousand, seven hundred nineteen".