545646545 has 4 divisors (see below), whose sum is σ = 654775860. Its totient is φ = 436517232.

The previous prime is 545646529. The next prime is 545646551.

545646545 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 405176641 + 140469904 = 20129^2 + 11852^2 .

It is a cyclic number.

It is not a de Polignac number, because 545646545 - 2⁴ = 545646529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 545646496 and 545646505.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54564650 + ... + 54564659.

It is an arithmetic number, because the mean of its divisors is an integer number (163693965).

Almost surely, 2^545646545 is an apocalyptic number.

It is an amenable number.

545646545 is a deficient number, since it is larger than the sum of its proper divisors (109129315).

545646545 is a wasteful number, since it uses less digits than its factorization.

545646545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109129314.

The product of its digits is 1440000, while the sum is 44.

The square root of 545646545 is about 23359.0784278832. The cubic root of 545646545 is about 817.1537973017.

The spelling of 545646545 in words is "five hundred forty-five million, six hundred forty-six thousand, five hundred forty-five".