54805189973 has 4 divisors (see below), whose sum is σ = 56695024140. Its totient is φ = 52915355808.

The previous prime is 54805189961. The next prime is 54805189979. The reversal of 54805189973 is 37998150845.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11282051089 + 43523138884 = 106217^2 + 208622^2 .

It is a cyclic number.

It is not a de Polignac number, because 54805189973 - 2⁸ = 54805189717 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 (54805189979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944917040 + ... + 944917097.

It is an arithmetic number, because the mean of its divisors is an integer number (14173756035).

Almost surely, 2^54805189973 is an apocalyptic number.

It is an amenable number.

54805189973 is a deficient number, since it is larger than the sum of its proper divisors (1889834167).

54805189973 is a wasteful number, since it uses less digits than its factorization.

54805189973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889834166.

The product of its (nonzero) digits is 10886400, while the sum is 59.

The spelling of 54805189973 in words is "fifty-four billion, eight hundred five million, one hundred eighty-nine thousand, nine hundred seventy-three".