51194807 has 2 divisors, whose sum is σ = 51194808. Its totient is φ = 51194806.

The previous prime is 51194789. The next prime is 51194809. The reversal of 51194807 is 70849115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51194807 - 2⁶ = 51194743 is a prime.

Together with 51194809, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51194809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25597403 + 25597404.

It is an arithmetic number, because the mean of its divisors is an integer number (25597404).

Almost surely, 2^51194807 is an apocalyptic number.

51194807 is a deficient number, since it is larger than the sum of its proper divisors (1).

51194807 is an equidigital number, since it uses as much as digits as its factorization.

51194807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 51194807 is about 7155.0546468912. The cubic root of 51194807 is about 371.3145522173.

The spelling of 51194807 in words is "fifty-one million, one hundred ninety-four thousand, eight hundred seven".