51304466 has 4 divisors (see below), whose sum is σ = 76956702. Its totient is φ = 25652232.

The previous prime is 51304441. The next prime is 51304471. The reversal of 51304466 is 66440315.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66440315 = 5 ⋅13288063.

It can be written as a sum of positive squares in only one way, i.e., 43626025 + 7678441 = 6605^2 + 2771^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 12826115 + ... + 12826118.

Almost surely, 2^51304466 is an apocalyptic number.

51304466 is a deficient number, since it is larger than the sum of its proper divisors (25652236).

51304466 is a wasteful number, since it uses less digits than its factorization.

51304466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25652235.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 51304466 is about 7162.7135919287. The cubic root of 51304466 is about 371.5794810701.

The spelling of 51304466 in words is "fifty-one million, three hundred four thousand, four hundred sixty-six".