51688134 has 12 divisors (see below), whose sum is σ = 111990996. Its totient is φ = 17229372.

The previous prime is 51688103. The next prime is 51688139. The reversal of 51688134 is 43188615.

51688134 is a `hidden beast` number, since 516 + 8 + 8 + 134 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51688139) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1435764 + ... + 1435799.

It is an arithmetic number, because the mean of its divisors is an integer number (9332583).

Almost surely, 2^51688134 is an apocalyptic number.

51688134 is an abundant number, since it is smaller than the sum of its proper divisors (60302862).

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

51688134 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 12 representation: 51688134 = (15388146)₁₂.

51688134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871571 (or 2871568 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 51688134 is about 7189.4460148192. The cubic root of 51688134 is about 372.5034373510.

The spelling of 51688134 in words is "fifty-one million, six hundred eighty-eight thousand, one hundred thirty-four".