51980219 has 8 divisors (see below), whose sum is σ = 54858000. Its totient is φ = 49116672.

The previous prime is 51980213. The next prime is 51980221. The reversal of 51980219 is 91208915.

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

It is not a de Polignac number, because 51980219 - 2¹⁶ = 51914683 is a prime.

It is a super-2 number, since 2×51980219² = 5403886334575922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51980213) 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, 4427 + ... + 11115.

It is an arithmetic number, because the mean of its divisors is an integer number (6857250).

Almost surely, 2^51980219 is an apocalyptic number.

51980219 is a deficient number, since it is larger than the sum of its proper divisors (2877781).

51980219 is a wasteful number, since it uses less digits than its factorization.

51980219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7117.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 51980219 is about 7209.7308548933. The cubic root of 51980219 is about 373.2037809591.

The spelling of 51980219 in words is "fifty-one million, nine hundred eighty thousand, two hundred nineteen".