51868684 has 24 divisors (see below), whose sum is σ = 104491520. Its totient is φ = 22067856.

The previous prime is 51868669. The next prime is 51868699. The reversal of 51868684 is 48686815.

It is an interprime number because it is at equal distance from previous prime (51868669) and next prime (51868699).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2772 + ... + 10555.

Almost surely, 2^51868684 is an apocalyptic number.

It is an amenable number.

51868684 is an abundant number, since it is smaller than the sum of its proper divisors (52622836).

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

51868684 is a wasteful number, since it uses less digits than its factorization.

51868684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13477 (or 13475 counting only the distinct ones).

The product of its digits is 368640, while the sum is 46.

The square root of 51868684 is about 7201.9916689760. The cubic root of 51868684 is about 372.9366595289.

It can be divided in two parts, 5 and 1868684, that added together give a square (1868689 = 1367²).

The spelling of 51868684 in words is "fifty-one million, eight hundred sixty-eight thousand, six hundred eighty-four".