51188694 has 16 divisors (see below), whose sum is σ = 102610800. Its totient is φ = 17024000.

The previous prime is 51188681. The next prime is 51188701. The reversal of 51188694 is 49688115.

51188694 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6807 + ... + 12194.

It is an arithmetic number, because the mean of its divisors is an integer number (6413175).

Almost surely, 2^51188694 is an apocalyptic number.

51188694 is an abundant number, since it is smaller than the sum of its proper divisors (51422106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51188694 is a wasteful number, since it uses less digits than its factorization.

51188694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19455.

The product of its digits is 69120, while the sum is 42.

The square root of 51188694 is about 7154.6274536135. The cubic root of 51188694 is about 371.2997724877.

The spelling of 51188694 in words is "fifty-one million, one hundred eighty-eight thousand, six hundred ninety-four".