545252235021 has 32 divisors (see below), whose sum is σ = 871927387520. Its totient is φ = 334764824832.

The previous prime is 545252235019. The next prime is 545252235049. The reversal of 545252235021 is 120532252545.

545252235021 is a `hidden beast` number, since 54 + 5 + 252 + 2 + 350 + 2 + 1 = 666.

It is not a de Polignac number, because 545252235021 - 2¹ = 545252235019 is a prime.

It is a super-3 number, since 3×545252235021³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545252236021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1641811 + ... + 1945776.

It is an arithmetic number, because the mean of its divisors is an integer number (27247730860).

Almost surely, 2^545252235021 is an apocalyptic number.

It is an amenable number.

545252235021 is a deficient number, since it is larger than the sum of its proper divisors (326675152499).

545252235021 is a wasteful number, since it uses less digits than its factorization.

545252235021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3588042 (or 3588036 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

Adding to 545252235021 its reverse (120532252545), we get a palindrome (665784487566).

The spelling of 545252235021 in words is "five hundred forty-five billion, two hundred fifty-two million, two hundred thirty-five thousand, twenty-one".