545455845 has 24 divisors (see below), whose sum is σ = 1031408352. Its totient is φ = 264463200.

The previous prime is 545455843. The next prime is 545455861. The reversal of 545455845 is 548554545.

545455845 is a `hidden beast` number, since 5 + 4 + 54 + 558 + 45 = 666.

545455845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 545455845 - 2¹ = 545455843 is a prime.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 545455845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545455843) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 550471 + ... + 551460.

It is an arithmetic number, because the mean of its divisors is an integer number (42975348).

Almost surely, 2^545455845 is an apocalyptic number.

545455845 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

545455845 is a deficient number, since it is larger than the sum of its proper divisors (485952507).

545455845 is a wasteful number, since it uses less digits than its factorization.

545455845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101953 (or 1101950 counting only the distinct ones).

The product of its digits is 1600000, while the sum is 45.

The square root of 545455845 is about 23354.9961464351. The cubic root of 545455845 is about 817.0585895229.

The spelling of 545455845 in words is "five hundred forty-five million, four hundred fifty-five thousand, eight hundred forty-five".