545121868 has 6 divisors (see below), whose sum is σ = 953963276. Its totient is φ = 272560932.

The previous prime is 545121859. The next prime is 545121869. The reversal of 545121868 is 868121545.

It is a happy number.

545121868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 545121868.

It is not an unprimeable number, because it can be changed into a prime (545121869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68140230 + ... + 68140237.

Almost surely, 2^545121868 is an apocalyptic number.

It is an amenable number.

545121868 is a deficient number, since it is larger than the sum of its proper divisors (408841408).

545121868 is a wasteful number, since it uses less digits than its factorization.

545121868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136280471 (or 136280469 counting only the distinct ones).

The product of its digits is 76800, while the sum is 40.

The square root of 545121868 is about 23347.8450397462. The cubic root of 545121868 is about 816.8917966214.

The spelling of 545121868 in words is "five hundred forty-five million, one hundred twenty-one thousand, eight hundred sixty-eight".