51302243 has 8 divisors (see below), whose sum is σ = 54859680. Its totient is φ = 47804800.

The previous prime is 51302231. The next prime is 51302263. The reversal of 51302243 is 34220315.

It is a happy number.

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 51302243 - 2¹⁰ = 51301219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51302203) 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, 13223 + ... + 16656.

It is an arithmetic number, because the mean of its divisors is an integer number (6857460).

Almost surely, 2^51302243 is an apocalyptic number.

51302243 is a deficient number, since it is larger than the sum of its proper divisors (3557437).

51302243 is a wasteful number, since it uses less digits than its factorization.

51302243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29997.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 51302243 is about 7162.5584116292. The cubic root of 51302243 is about 371.5741142006.

Adding to 51302243 its reverse (34220315), we get a palindrome (85522558).

The spelling of 51302243 in words is "fifty-one million, three hundred two thousand, two hundred forty-three".