51344243 has 4 divisors (see below), whose sum is σ = 51389928. Its totient is φ = 51298560.

The previous prime is 51344221. The next prime is 51344261. The reversal of 51344243 is 34244315.

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 51344243 - 2⁶ = 51344179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51314243) 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, 21113 + ... + 23418.

It is an arithmetic number, because the mean of its divisors is an integer number (12847482).

Almost surely, 2^51344243 is an apocalyptic number.

51344243 is a deficient number, since it is larger than the sum of its proper divisors (45685).

51344243 is a wasteful number, since it uses less digits than its factorization.

51344243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45684.

The product of its digits is 5760, while the sum is 26.

The square root of 51344243 is about 7165.4897250642. The cubic root of 51344243 is about 371.6754863501.

Adding to 51344243 its reverse (34244315), we get a palindrome (85588558).

The spelling of 51344243 in words is "fifty-one million, three hundred forty-four thousand, two hundred forty-three".