51286351 has 4 divisors (see below), whose sum is σ = 52254072. Its totient is φ = 50318632.

The previous prime is 51286327. The next prime is 51286357. The reversal of 51286351 is 15368215.

51286351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51286351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51286357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483781 + ... + 483886.

It is an arithmetic number, because the mean of its divisors is an integer number (13063518).

Almost surely, 2^51286351 is an apocalyptic number.

51286351 is a deficient number, since it is larger than the sum of its proper divisors (967721).

51286351 is an equidigital number, since it uses as much as digits as its factorization.

51286351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967720.

The product of its digits is 7200, while the sum is 31.

The square root of 51286351 is about 7161.4489455696. The cubic root of 51286351 is about 371.5357424822.

The spelling of 51286351 in words is "fifty-one million, two hundred eighty-six thousand, three hundred fifty-one".