545121895 has 4 divisors (see below), whose sum is σ = 654146280. Its totient is φ = 436097512.

The previous prime is 545121869. The next prime is 545121917. The reversal of 545121895 is 598121545.

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

It is a cyclic number.

It is not a de Polignac number, because 545121895 - 2⁹ = 545121383 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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, 54512185 + ... + 54512194.

It is an arithmetic number, because the mean of its divisors is an integer number (163536570).

Almost surely, 2^545121895 is an apocalyptic number.

545121895 is a deficient number, since it is larger than the sum of its proper divisors (109024385).

545121895 is a wasteful number, since it uses less digits than its factorization.

545121895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109024384.

The product of its digits is 72000, while the sum is 40.

The square root of 545121895 is about 23347.8456179580. The cubic root of 545121895 is about 816.8918101083.

The spelling of 545121895 in words is "five hundred forty-five million, one hundred twenty-one thousand, eight hundred ninety-five".