5515642049 has 4 divisors (see below), whose sum is σ = 5536614336. Its totient is φ = 5494669764.

The previous prime is 5515642043. The next prime is 5515642063. The reversal of 5515642049 is 9402465155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9402465155 = 5 ⋅1880493031.

It is a cyclic number.

It is not a de Polignac number, because 5515642049 - 2²⁰ = 5514593473 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5515641997 and 5515642015.

It is not an unprimeable number, because it can be changed into a prime (5515642043) 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, 10485749 + ... + 10486274.

It is an arithmetic number, because the mean of its divisors is an integer number (1384153584).

Almost surely, 2^5515642049 is an apocalyptic number.

It is an amenable number.

5515642049 is a deficient number, since it is larger than the sum of its proper divisors (20972287).

5515642049 is a wasteful number, since it uses less digits than its factorization.

5515642049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20972286.

The product of its (nonzero) digits is 216000, while the sum is 41.

The square root of 5515642049 is about 74267.3686688845. The cubic root of 5515642049 is about 1766.8459741387.

The spelling of 5515642049 in words is "five billion, five hundred fifteen million, six hundred forty-two thousand, forty-nine".