5499999945 has 144 divisors (see below), whose sum is σ = 10805807376. Its totient is φ = 2585088000.

The previous prime is 5499999893. The next prime is 5499999949.

5499999945 is a `hidden beast` number, since 5 + 499 + 9 + 9 + 99 + 45 = 666.

5499999945 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 8 ways, for example, as 480135744 + 5019864201 = 21912^2 + 70851^2 .

It is not a de Polignac number, because 5499999945 - 2⁹ = 5499999433 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5499999949) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 40145917 + ... + 40146053.

It is an arithmetic number, because the mean of its divisors is an integer number (75040329).

Almost surely, 2^5499999945 is an apocalyptic number.

5499999945 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5499999945 is a deficient number, since it is larger than the sum of its proper divisors (5305807431).

5499999945 is a wasteful number, since it uses less digits than its factorization.

5499999945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 330 counting only the distinct ones).

The product of its digits is 212576400, while the sum is 72.

The square root of 5499999945 is about 74161.9845001467. The cubic root of 5499999945 is about 1765.1741617791.

It can be divided in two parts, 54 and 99999945, that added together give a palindrome (99999999).

The spelling of 5499999945 in words is "five billion, four hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred forty-five".