51379859 has 2 divisors, whose sum is σ = 51379860. Its totient is φ = 51379858.

The previous prime is 51379849. The next prime is 51379871. The reversal of 51379859 is 95897315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51379859 - 2¹² = 51375763 is a prime.

It is not a weakly prime, because it can be changed into another prime (51379829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25689929 + 25689930.

It is an arithmetic number, because the mean of its divisors is an integer number (25689930).

Almost surely, 2^51379859 is an apocalyptic number.

51379859 is a deficient number, since it is larger than the sum of its proper divisors (1).

51379859 is an equidigital number, since it uses as much as digits as its factorization.

51379859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 47.

The square root of 51379859 is about 7167.9745395753. The cubic root of 51379859 is about 371.7614066252.

The spelling of 51379859 in words is "fifty-one million, three hundred seventy-nine thousand, eight hundred fifty-nine".