51287702 has 32 divisors (see below), whose sum is σ = 82280448. Its totient is φ = 23940000.

The previous prime is 51287701. The next prime is 51287711. The reversal of 51287702 is 20778215.

51287702 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51287701) 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 15 ways as a sum of consecutive naturals, for example, 268427 + ... + 268617.

It is an arithmetic number, because the mean of its divisors is an integer number (2571264).

Almost surely, 2^51287702 is an apocalyptic number.

51287702 is a deficient number, since it is larger than the sum of its proper divisors (30992746).

51287702 is a wasteful number, since it uses less digits than its factorization.

51287702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 51287702 is about 7161.5432694357. The cubic root of 51287702 is about 371.5390048211.

The spelling of 51287702 in words is "fifty-one million, two hundred eighty-seven thousand, seven hundred two".