51684102 has 32 divisors (see below), whose sum is σ = 115516800. Its totient is φ = 17128584.

The previous prime is 51684043. The next prime is 51684107. The reversal of 51684102 is 20148615.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51684107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6993 + ... + 12339.

It is an arithmetic number, because the mean of its divisors is an integer number (3609900).

Almost surely, 2^51684102 is an apocalyptic number.

51684102 is an abundant number, since it is smaller than the sum of its proper divisors (63832698).

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

51684102 is a wasteful number, since it uses less digits than its factorization.

51684102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5537 (or 5531 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 51684102 is about 7189.1655983153. The cubic root of 51684102 is about 372.4937512277.

The spelling of 51684102 in words is "fifty-one million, six hundred eighty-four thousand, one hundred two".