5115551009 has 4 divisors (see below), whose sum is σ = 5138086704. Its totient is φ = 5093015316.

The previous prime is 5115550907. The next prime is 5115551011. The reversal of 5115551009 is 9001555115.

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.

It is a cyclic number.

It is not a de Polignac number, because 5115551009 - 2²⁴ = 5098773793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5115550009) 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, 11267507 + ... + 11267960.

It is an arithmetic number, because the mean of its divisors is an integer number (1284521676).

Almost surely, 2^5115551009 is an apocalyptic number.

It is an amenable number.

5115551009 is a deficient number, since it is larger than the sum of its proper divisors (22535695).

5115551009 is a wasteful number, since it uses less digits than its factorization.

5115551009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22535694.

The product of its (nonzero) digits is 5625, while the sum is 32.

The square root of 5115551009 is about 71523.0802538593. The cubic root of 5115551009 is about 1723.0483854537.

The spelling of 5115551009 in words is "five billion, one hundred fifteen million, five hundred fifty-one thousand, nine".