51287234 has 8 divisors (see below), whose sum is σ = 77376060. Its totient is φ = 25495216.

The previous prime is 51287233. The next prime is 51287279. The reversal of 51287234 is 43278215.

It can be written as a sum of positive squares in 2 ways, for example, as 33605209 + 17682025 = 5797^2 + 4205^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51287234.

It is not an unprimeable number, because it can be changed into a prime (51287233) 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, 73769 + ... + 74460.

Almost surely, 2^51287234 is an apocalyptic number.

51287234 is a deficient number, since it is larger than the sum of its proper divisors (26088826).

51287234 is a wasteful number, since it uses less digits than its factorization.

51287234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148404.

The product of its digits is 13440, while the sum is 32.

The square root of 51287234 is about 7161.5105948396. The cubic root of 51287234 is about 371.5378747205.

The spelling of 51287234 in words is "fifty-one million, two hundred eighty-seven thousand, two hundred thirty-four".