545656545 has 48 divisors (see below), whose sum is σ = 1084916352. Its totient is φ = 248520960.

The previous prime is 545656543. The next prime is 545656549.

545656545 is a `hidden beast` number, since 5 + 4 + 56 + 56 + 545 = 666.

545656545 is nontrivially palindromic in base 10.

545656545 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 545656545 - 2¹ = 545656543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

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

It is a self number, because there is not a number n which added to its sum of digits gives 545656545.

It is not an unprimeable number, because it can be changed into a prime (545656543) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 86085 + ... + 92205.

It is an arithmetic number, because the mean of its divisors is an integer number (22602424).

Almost surely, 2^545656545 is an apocalyptic number.

It is an amenable number.

545656545 is a deficient number, since it is larger than the sum of its proper divisors (539259807).

545656545 is a wasteful number, since it uses less digits than its factorization.

545656545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6422 (or 6419 counting only the distinct ones).

The product of its digits is 1800000, while the sum is 45.

The square root of 545656545 is about 23359.2924764429. The cubic root of 545656545 is about 817.1587892317.

It can be divided in two parts, 5456 and 56545, that added together give a square (62001 = 249²).

The spelling of 545656545 in words is "five hundred forty-five million, six hundred fifty-six thousand, five hundred forty-five".