545590819 has 4 divisors (see below), whose sum is σ = 545925744. Its totient is φ = 545255896.

The previous prime is 545590817. The next prime is 545590847. The reversal of 545590819 is 918095545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 918095545 = 5 ⋅183619109.

It is a cyclic number.

It is not a de Polignac number, because 545590819 - 2¹ = 545590817 is a prime.

It is a super-2 number, since 2×545590819² = 595338683554181522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545590811) 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, 165007 + ... + 168280.

It is an arithmetic number, because the mean of its divisors is an integer number (136481436).

Almost surely, 2^545590819 is an apocalyptic number.

545590819 is a deficient number, since it is larger than the sum of its proper divisors (334925).

545590819 is a wasteful number, since it uses less digits than its factorization.

545590819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334924.

The product of its (nonzero) digits is 324000, while the sum is 46.

The square root of 545590819 is about 23357.8855849582. The cubic root of 545590819 is about 817.1259781557.

The spelling of 545590819 in words is "five hundred forty-five million, five hundred ninety thousand, eight hundred nineteen".