51351799 has 2 divisors, whose sum is σ = 51351800. Its totient is φ = 51351798.

The previous prime is 51351791. The next prime is 51351809. The reversal of 51351799 is 99715315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51351799 - 2³ = 51351791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51351791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25675899 + 25675900.

It is an arithmetic number, because the mean of its divisors is an integer number (25675900).

Almost surely, 2^51351799 is an apocalyptic number.

51351799 is a deficient number, since it is larger than the sum of its proper divisors (1).

51351799 is an equidigital number, since it uses as much as digits as its factorization.

51351799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42525, while the sum is 40.

The square root of 51351799 is about 7166.0169550455. The cubic root of 51351799 is about 371.6937178145.

The spelling of 51351799 in words is "fifty-one million, three hundred fifty-one thousand, seven hundred ninety-nine".