545497671 has 4 divisors (see below), whose sum is σ = 727330232. Its totient is φ = 363665112.

The previous prime is 545497637. The next prime is 545497679. The reversal of 545497671 is 176794545.

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

It is not a de Polignac number, because 545497671 - 2⁹ = 545497159 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 545497671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545497679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90916276 + ... + 90916281.

It is an arithmetic number, because the mean of its divisors is an integer number (181832558).

Almost surely, 2^545497671 is an apocalyptic number.

545497671 is a deficient number, since it is larger than the sum of its proper divisors (181832561).

545497671 is a wasteful number, since it uses less digits than its factorization.

545497671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181832560.

The product of its digits is 1058400, while the sum is 48.

The square root of 545497671 is about 23355.8915693664. The cubic root of 545497671 is about 817.0794732293.

The spelling of 545497671 in words is "five hundred forty-five million, four hundred ninety-seven thousand, six hundred seventy-one".