51394579 has 2 divisors, whose sum is σ = 51394580. Its totient is φ = 51394578.

The previous prime is 51394543. The next prime is 51394613. The reversal of 51394579 is 97549315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51394579 - 2⁹ = 51394067 is a prime.

It is not a weakly prime, because it can be changed into another prime (51394529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25697289 + 25697290.

It is an arithmetic number, because the mean of its divisors is an integer number (25697290).

Almost surely, 2^51394579 is an apocalyptic number.

51394579 is a deficient number, since it is larger than the sum of its proper divisors (1).

51394579 is an equidigital number, since it uses as much as digits as its factorization.

51394579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 170100, while the sum is 43.

The square root of 51394579 is about 7169.0012554051. The cubic root of 51394579 is about 371.7969056547.

The spelling of 51394579 in words is "fifty-one million, three hundred ninety-four thousand, five hundred seventy-nine".