51125219 has 8 divisors (see below), whose sum is σ = 53922000. Its totient is φ = 48339072.

The previous prime is 51125201. The next prime is 51125279. The reversal of 51125219 is 91252115.

51125219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 51125219 - 2¹² = 51121123 is a prime.

It is a super-2 number, since 2×51125219² = 5227576035595922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51125279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8447 + ... + 13175.

It is an arithmetic number, because the mean of its divisors is an integer number (6740250).

Almost surely, 2^51125219 is an apocalyptic number.

51125219 is a deficient number, since it is larger than the sum of its proper divisors (2796781).

51125219 is a wasteful number, since it uses less digits than its factorization.

51125219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5317.

The product of its digits is 900, while the sum is 26.

The square root of 51125219 is about 7150.1901373320. The cubic root of 51125219 is about 371.1462359699.

The spelling of 51125219 in words is "fifty-one million, one hundred twenty-five thousand, two hundred nineteen".