545126121 has 12 divisors (see below), whose sum is σ = 789924148. Its totient is φ = 362254464.

The previous prime is 545126111. The next prime is 545126171. The reversal of 545126121 is 121621545.

545126121 is a `hidden beast` number, since 5 + 45 + 1 + 2 + 612 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 192099600 + 353026521 = 13860^2 + 18789^2 .

It is not a de Polignac number, because 545126121 - 2⁷ = 545125993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545126111) 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, 93940 + ... + 99573.

Almost surely, 2^545126121 is an apocalyptic number.

It is an amenable number.

545126121 is a deficient number, since it is larger than the sum of its proper divisors (244798027).

545126121 is a wasteful number, since it uses less digits than its factorization.

545126121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193832 (or 193829 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 545126121 is about 23347.9361186380. The cubic root of 545126121 is about 816.8939210587.

Adding to 545126121 its reverse (121621545), we get a palindrome (666747666).

The spelling of 545126121 in words is "five hundred forty-five million, one hundred twenty-six thousand, one hundred twenty-one".