51726351 has 4 divisors (see below), whose sum is σ = 68968472. Its totient is φ = 34484232.

The previous prime is 51726349. The next prime is 51726419. The reversal of 51726351 is 15362715.

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

It is not a de Polignac number, because 51726351 - 2¹ = 51726349 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51726551) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 8621056 + ... + 8621061.

It is an arithmetic number, because the mean of its divisors is an integer number (17242118).

Almost surely, 2^51726351 is an apocalyptic number.

51726351 is a deficient number, since it is larger than the sum of its proper divisors (17242121).

51726351 is a wasteful number, since it uses less digits than its factorization.

51726351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17242120.

The product of its digits is 6300, while the sum is 30.

The square root of 51726351 is about 7192.1033780112. The cubic root of 51726351 is about 372.5952215164.

The spelling of 51726351 in words is "fifty-one million, seven hundred twenty-six thousand, three hundred fifty-one".