545450545 has 4 divisors (see below), whose sum is σ = 654540660. Its totient is φ = 436360432.

The previous prime is 545450527. The next prime is 545450561. The reversal of 545450545 is 545054545.

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 245329569 + 300120976 = 15663^2 + 17324^2 .

It is a cyclic number.

It is not a de Polignac number, because 545450545 - 2⁹ = 545450033 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54545050 + ... + 54545059.

It is an arithmetic number, because the mean of its divisors is an integer number (163635165).

Almost surely, 2^545450545 is an apocalyptic number.

It is an amenable number.

545450545 is a deficient number, since it is larger than the sum of its proper divisors (109090115).

545450545 is a wasteful number, since it uses less digits than its factorization.

545450545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109090114.

The product of its (nonzero) digits is 200000, while the sum is 37.

The square root of 545450545 is about 23354.8826800736. The cubic root of 545450545 is about 817.0559431587.

The spelling of 545450545 in words is "five hundred forty-five million, four hundred fifty thousand, five hundred forty-five".