545423693 has 4 divisors (see below), whose sum is σ = 545472768. Its totient is φ = 545374620.

The previous prime is 545423657. The next prime is 545423707. The reversal of 545423693 is 396324545.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 545423693 - 2²⁸ = 276988237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 545423693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545423293) 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, 980 + ... + 33042.

It is an arithmetic number, because the mean of its divisors is an integer number (136368192).

Almost surely, 2^545423693 is an apocalyptic number.

It is an amenable number.

545423693 is a deficient number, since it is larger than the sum of its proper divisors (49075).

545423693 is a wasteful number, since it uses less digits than its factorization.

545423693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49074.

The product of its digits is 388800, while the sum is 41.

The square root of 545423693 is about 23354.3078039149. The cubic root of 545423693 is about 817.0425353154.

The spelling of 545423693 in words is "five hundred forty-five million, four hundred twenty-three thousand, six hundred ninety-three".