51288771 has 32 divisors (see below), whose sum is σ = 75075840. Its totient is φ = 31031424.

The previous prime is 51288763. The next prime is 51288793. The reversal of 51288771 is 17788215.

51288771 is nontrivially palindromic in base 4 and base 8.

51288771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51288771 - 2³ = 51288763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51288761) 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 31 ways as a sum of consecutive naturals, for example, 174901 + ... + 175193.

It is an arithmetic number, because the mean of its divisors is an integer number (2346120).

Almost surely, 2^51288771 is an apocalyptic number.

51288771 is a deficient number, since it is larger than the sum of its proper divisors (23787069).

51288771 is a wasteful number, since it uses less digits than its factorization.

51288771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435.

The product of its digits is 31360, while the sum is 39.

The square root of 51288771 is about 7161.6179037980. The cubic root of 51288771 is about 371.5415861575.

The spelling of 51288771 in words is "fifty-one million, two hundred eighty-eight thousand, seven hundred seventy-one".