51214243 has 4 divisors (see below), whose sum is σ = 51258088. Its totient is φ = 51170400.

The previous prime is 51214231. The next prime is 51214259. The reversal of 51214243 is 34241215.

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

It is a cyclic number.

It is not a de Polignac number, because 51214243 - 2⁵ = 51214211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51214213) 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, 20121 + ... + 22522.

It is an arithmetic number, because the mean of its divisors is an integer number (12814522).

Almost surely, 2^51214243 is an apocalyptic number.

51214243 is a deficient number, since it is larger than the sum of its proper divisors (43845).

51214243 is a wasteful number, since it uses less digits than its factorization.

51214243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43844.

The product of its digits is 960, while the sum is 22.

The square root of 51214243 is about 7156.4127186741. The cubic root of 51214243 is about 371.3615358663.

Adding to 51214243 its reverse (34241215), we get a palindrome (85455458).

The spelling of 51214243 in words is "fifty-one million, two hundred fourteen thousand, two hundred forty-three".