545791923 has 12 divisors (see below), whose sum is σ = 788584368. Its totient is φ = 363760560.

The previous prime is 545791907. The next prime is 545791931. The reversal of 545791923 is 329197545.

It is a happy number.

545791923 is a `hidden beast` number, since 5 + 457 + 9 + 192 + 3 = 666.

It is not a de Polignac number, because 545791923 - 2⁴ = 545791907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (545791963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41586 + ... + 53112.

It is an arithmetic number, because the mean of its divisors is an integer number (65715364).

Almost surely, 2^545791923 is an apocalyptic number.

545791923 is a deficient number, since it is larger than the sum of its proper divisors (242792445).

545791923 is a wasteful number, since it uses less digits than its factorization.

545791923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16794 (or 16791 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 545791923 is about 23362.1900300464. The cubic root of 545791923 is about 817.2263629806.

The spelling of 545791923 in words is "five hundred forty-five million, seven hundred ninety-one thousand, nine hundred twenty-three".