51334251 has 4 divisors (see below), whose sum is σ = 68445672. Its totient is φ = 34222832.

The previous prime is 51334249. The next prime is 51334253. The reversal of 51334251 is 15243315.

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

It is an interprime number because it is at equal distance from previous prime (51334249) and next prime (51334253).

It is a cyclic number.

It is not a de Polignac number, because 51334251 - 2¹ = 51334249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51334253) 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, 8555706 + ... + 8555711.

It is an arithmetic number, because the mean of its divisors is an integer number (17111418).

Almost surely, 2^51334251 is an apocalyptic number.

51334251 is a deficient number, since it is larger than the sum of its proper divisors (17111421).

51334251 is a wasteful number, since it uses less digits than its factorization.

51334251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17111420.

The product of its digits is 1800, while the sum is 24.

The square root of 51334251 is about 7164.7924603578. The cubic root of 51334251 is about 371.6513744459.

Adding to 51334251 its reverse (15243315), we get a palindrome (66577566).

The spelling of 51334251 in words is "fifty-one million, three hundred thirty-four thousand, two hundred fifty-one".