545808545 has 16 divisors (see below), whose sum is σ = 700375248. Its totient is φ = 406886400.

The previous prime is 545808539. The next prime is 545808547.

545808545 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 8 ways, for example, as 208975936 + 336832609 = 14456^2 + 18353^2 .

It is not a de Polignac number, because 545808545 - 2⁶ = 545808481 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 545808496 and 545808505.

It is not an unprimeable number, because it can be changed into a prime (545808547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23204 + ... + 40373.

It is an arithmetic number, because the mean of its divisors is an integer number (43773453).

Almost surely, 2^545808545 is an apocalyptic number.

It is an amenable number.

545808545 is a deficient number, since it is larger than the sum of its proper divisors (154566703).

545808545 is a wasteful number, since it uses less digits than its factorization.

545808545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63700.

The product of its (nonzero) digits is 640000, while the sum is 44.

The square root of 545808545 is about 23362.5457730959. The cubic root of 545808545 is about 817.2346590596.

The spelling of 545808545 in words is "five hundred forty-five million, eight hundred eight thousand, five hundred forty-five".