5121216291 has 8 divisors (see below), whose sum is σ = 6830423824. Its totient is φ = 3413076480.

The previous prime is 5121216263. The next prime is 5121216311. The reversal of 5121216291 is 1926121215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5121216291 - 2⁵ = 5121216259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5121215291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255670 + ... + 274971.

It is an arithmetic number, because the mean of its divisors is an integer number (853802978).

Almost surely, 2^5121216291 is an apocalyptic number.

5121216291 is a deficient number, since it is larger than the sum of its proper divisors (1709207533).

5121216291 is a wasteful number, since it uses less digits than its factorization.

5121216291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533861.

The product of its digits is 2160, while the sum is 30.

The square root of 5121216291 is about 71562.6738670377. The cubic root of 5121216291 is about 1723.6842214032.

The spelling of 5121216291 in words is "five billion, one hundred twenty-one million, two hundred sixteen thousand, two hundred ninety-one".