51684043 has 2 divisors, whose sum is σ = 51684044. Its totient is φ = 51684042.

The previous prime is 51683993. The next prime is 51684107. The reversal of 51684043 is 34048615.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51684043 - 2¹³ = 51675851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51683996 and 51684014.

It is not a weakly prime, because it can be changed into another prime (51684343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25842021 + 25842022.

It is an arithmetic number, because the mean of its divisors is an integer number (25842022).

Almost surely, 2^51684043 is an apocalyptic number.

51684043 is a deficient number, since it is larger than the sum of its proper divisors (1).

51684043 is an equidigital number, since it uses as much as digits as its factorization.

51684043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 51684043 is about 7189.1614949172. The cubic root of 51684043 is about 372.4936094875.

The spelling of 51684043 in words is "fifty-one million, six hundred eighty-four thousand, forty-three".