545164813 has 4 divisors (see below), whose sum is σ = 548775328. Its totient is φ = 541554300.

The previous prime is 545164801. The next prime is 545164817. The reversal of 545164813 is 318461545.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 318461545 = 5 ⋅63692309.

It is a cyclic number.

It is not a de Polignac number, because 545164813 - 2¹³ = 545156621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545164817) 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, 1805031 + ... + 1805332.

It is an arithmetic number, because the mean of its divisors is an integer number (137193832).

Almost surely, 2^545164813 is an apocalyptic number.

It is an amenable number.

545164813 is a deficient number, since it is larger than the sum of its proper divisors (3610515).

545164813 is a wasteful number, since it uses less digits than its factorization.

545164813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610514.

The product of its digits is 57600, while the sum is 37.

The square root of 545164813 is about 23348.7646996581. The cubic root of 545164813 is about 816.9132477861.

The spelling of 545164813 in words is "five hundred forty-five million, one hundred sixty-four thousand, eight hundred thirteen".