5161511217 has 4 divisors (see below), whose sum is σ = 6882014960. Its totient is φ = 3441007476.

The previous prime is 5161511207. The next prime is 5161511233. The reversal of 5161511217 is 7121151615.

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 not a de Polignac number, because 5161511217 - 2⁶ = 5161511153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5161511207) 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, 860251867 + ... + 860251872.

It is an arithmetic number, because the mean of its divisors is an integer number (1720503740).

Almost surely, 2^5161511217 is an apocalyptic number.

It is an amenable number.

5161511217 is a deficient number, since it is larger than the sum of its proper divisors (1720503743).

5161511217 is a wasteful number, since it uses less digits than its factorization.

5161511217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720503742.

The product of its digits is 2100, while the sum is 30.

The square root of 5161511217 is about 71843.6581543563. The cubic root of 5161511217 is about 1728.1931994606.

The spelling of 5161511217 in words is "five billion, one hundred sixty-one million, five hundred eleven thousand, two hundred seventeen".