545121161 has 12 divisors (see below), whose sum is σ = 591628752. Its totient is φ = 502038576.

The previous prime is 545121151. The next prime is 545121169. The reversal of 545121161 is 161121545.

545121161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-545121161 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 545121161.

It is not an unprimeable number, because it can be changed into a prime (545121169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75470 + ... + 82376.

It is an arithmetic number, because the mean of its divisors is an integer number (49302396).

Almost surely, 2^545121161 is an apocalyptic number.

It is an amenable number.

545121161 is a deficient number, since it is larger than the sum of its proper divisors (46507591).

545121161 is a wasteful number, since it uses less digits than its factorization.

545121161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7400 (or 7387 counting only the distinct ones).

The product of its digits is 1200, while the sum is 26.

The square root of 545121161 is about 23347.8298991577. The cubic root of 545121161 is about 816.8914434632.

It can be divided in two parts, 54 and 5121161, that added together give a palindrome (5121215).

The spelling of 545121161 in words is "five hundred forty-five million, one hundred twenty-one thousand, one hundred sixty-one".