51938887 has 48 divisors (see below), whose sum is σ = 72394560. Its totient is φ = 36241920.

The previous prime is 51938881. The next prime is 51938903. The reversal of 51938887 is 78883915.

It is not a de Polignac number, because 51938887 - 2¹¹ = 51936839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51938887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51938881) 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 47 ways as a sum of consecutive naturals, for example, 583539 + ... + 583627.

It is an arithmetic number, because the mean of its divisors is an integer number (1508220).

Almost surely, 2^51938887 is an apocalyptic number.

51938887 is a deficient number, since it is larger than the sum of its proper divisors (20455673).

51938887 is a wasteful number, since it uses less digits than its factorization.

51938887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 173 counting only the distinct ones).

The product of its digits is 483840, while the sum is 49.

The square root of 51938887 is about 7206.8638810512. The cubic root of 51938887 is about 373.1048372376.

It can be divided in two parts, 51938 and 887, that added together give a palindrome (52825).

The spelling of 51938887 in words is "fifty-one million, nine hundred thirty-eight thousand, eight hundred eighty-seven".