545978973 has 4 divisors (see below), whose sum is σ = 727971968. Its totient is φ = 363985980.

The previous prime is 545978971. The next prime is 545978977. The reversal of 545978973 is 379879545.

545978973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is not a de Polignac number, because 545978973 - 2¹ = 545978971 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 (545978971) 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, 90996493 + ... + 90996498.

It is an arithmetic number, because the mean of its divisors is an integer number (181992992).

Almost surely, 2^545978973 is an apocalyptic number.

It is an amenable number.

545978973 is a deficient number, since it is larger than the sum of its proper divisors (181992995).

545978973 is a wasteful number, since it uses less digits than its factorization.

545978973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181992994.

The product of its digits is 9525600, while the sum is 57.

The square root of 545978973 is about 23366.1929505001. The cubic root of 545978973 is about 817.3197103568.

The spelling of 545978973 in words is "five hundred forty-five million, nine hundred seventy-eight thousand, nine hundred seventy-three".