51858673 has 2 divisors, whose sum is σ = 51858674. Its totient is φ = 51858672.

The previous prime is 51858671. The next prime is 51858683. The reversal of 51858673 is 37685815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37051569 + 14807104 = 6087^2 + 3848^2 .

It is a cyclic number.

It is not a de Polignac number, because 51858673 - 2¹ = 51858671 is a prime.

Together with 51858671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51858671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25929336 + 25929337.

It is an arithmetic number, because the mean of its divisors is an integer number (25929337).

Almost surely, 2^51858673 is an apocalyptic number.

It is an amenable number.

51858673 is a deficient number, since it is larger than the sum of its proper divisors (1).

51858673 is an equidigital number, since it uses as much as digits as its factorization.

51858673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 43.

The square root of 51858673 is about 7201.2966193596. The cubic root of 51858673 is about 372.9126649023.

The spelling of 51858673 in words is "fifty-one million, eight hundred fifty-eight thousand, six hundred seventy-three".