51283973 has 4 divisors (see below), whose sum is σ = 55228908. Its totient is φ = 47339040.

The previous prime is 51283963. The next prime is 51284017. The reversal of 51283973 is 37938215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10745284 + 40538689 = 3278^2 + 6367^2 .

It is a cyclic number.

It is not a de Polignac number, because 51283973 - 2²⁰ = 50235397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51283933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1972448 + ... + 1972473.

It is an arithmetic number, because the mean of its divisors is an integer number (13807227).

Almost surely, 2^51283973 is an apocalyptic number.

It is an amenable number.

51283973 is a deficient number, since it is larger than the sum of its proper divisors (3944935).

51283973 is a wasteful number, since it uses less digits than its factorization.

51283973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3944934.

The product of its digits is 45360, while the sum is 38.

The square root of 51283973 is about 7161.2829157910. The cubic root of 51283973 is about 371.5300000469.

The spelling of 51283973 in words is "fifty-one million, two hundred eighty-three thousand, nine hundred seventy-three".