51495219 has 6 divisors (see below), whose sum is σ = 74381996. Its totient is φ = 34330140.

The previous prime is 51495211. The next prime is 51495233. The reversal of 51495219 is 91259415.

It is not a de Polignac number, because 51495219 - 2³ = 51495211 is a prime.

It is a super-2 number, since 2×51495219² = 5303515159715922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51495211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2860837 + ... + 2860854.

Almost surely, 2^51495219 is an apocalyptic number.

51495219 is a deficient number, since it is larger than the sum of its proper divisors (22886777).

51495219 is a wasteful number, since it uses less digits than its factorization.

51495219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5721697 (or 5721694 counting only the distinct ones).

The product of its digits is 16200, while the sum is 36.

The square root of 51495219 is about 7176.0169314182. The cubic root of 51495219 is about 372.0394295701.

The spelling of 51495219 in words is "fifty-one million, four hundred ninety-five thousand, two hundred nineteen".