51687092 has 12 divisors (see below), whose sum is σ = 90780900. Its totient is φ = 25749696.

The previous prime is 51687067. The next prime is 51687107. The reversal of 51687092 is 29078615.

51687092 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 20394256 + 31292836 = 4516^2 + 5594^2 .

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 3 ways as a sum of consecutive naturals, for example, 22217 + ... + 24432.

It is an arithmetic number, because the mean of its divisors is an integer number (7565075).

Almost surely, 2^51687092 is an apocalyptic number.

It is an amenable number.

51687092 is a deficient number, since it is larger than the sum of its proper divisors (39093808).

51687092 is a wasteful number, since it uses less digits than its factorization.

51687092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46930 (or 46928 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 51687092 is about 7189.3735471180. The cubic root of 51687092 is about 372.5009341898.

The spelling of 51687092 in words is "fifty-one million, six hundred eighty-seven thousand, ninety-two".