5518453249 has 4 divisors (see below), whose sum is σ = 5843068164. Its totient is φ = 5193838336.

The previous prime is 5518453231. The next prime is 5518453337. The reversal of 5518453249 is 9423548155.

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 3278135025 + 2240318224 = 57255^2 + 47332^2 .

It is a cyclic number.

It is not a de Polignac number, because 5518453249 - 2¹³ = 5518445057 is a prime.

It is a super-2 number, since 2×5518453249² = 60906652522797312002, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5518453199 and 5518453208.

It is not an unprimeable number, because it can be changed into a prime (5518453219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162307432 + ... + 162307465.

It is an arithmetic number, because the mean of its divisors is an integer number (1460767041).

Almost surely, 2^5518453249 is an apocalyptic number.

It is an amenable number.

5518453249 is a deficient number, since it is larger than the sum of its proper divisors (324614915).

5518453249 is a wasteful number, since it uses less digits than its factorization.

5518453249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324614914.

The product of its digits is 864000, while the sum is 46.

The square root of 5518453249 is about 74286.2924704148. The cubic root of 5518453249 is about 1767.1460971796.

The spelling of 5518453249 in words is "five billion, five hundred eighteen million, four hundred fifty-three thousand, two hundred forty-nine".