51988071 has 16 divisors (see below), whose sum is σ = 72542304. Its totient is φ = 33081984.

The previous prime is 51988061. The next prime is 51988081. The reversal of 51988071 is 17088915.

51988071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51988061) and next prime (51988081).

It is not a de Polignac number, because 51988071 - 2⁶ = 51988007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51988021) 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, 1465 + ... + 10301.

It is an arithmetic number, because the mean of its divisors is an integer number (4533894).

Almost surely, 2^51988071 is an apocalyptic number.

51988071 is a deficient number, since it is larger than the sum of its proper divisors (20554233).

51988071 is a wasteful number, since it uses less digits than its factorization.

51988071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8930.

The product of its (nonzero) digits is 20160, while the sum is 39.

The square root of 51988071 is about 7210.2753761559. The cubic root of 51988071 is about 373.2225717517. Note that the first 3 decimals are identical.

The spelling of 51988071 in words is "fifty-one million, nine hundred eighty-eight thousand, seventy-one".