51687102 has 8 divisors (see below), whose sum is σ = 103374216. Its totient is φ = 17229032.

The previous prime is 51687067. The next prime is 51687107. The reversal of 51687102 is 20178615.

It is a sphenic number, since it is the product of 3 distinct primes.

51687102 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 51687102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51687107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4307253 + ... + 4307264.

It is an arithmetic number, because the mean of its divisors is an integer number (12921777).

Almost surely, 2^51687102 is an apocalyptic number.

51687102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51687102 is a wasteful number, since it uses less digits than its factorization.

51687102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8614522.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 51687102 is about 7189.3742425888. The cubic root of 51687102 is about 372.5009582126.

The spelling of 51687102 in words is "fifty-one million, six hundred eighty-seven thousand, one hundred two".