51330379 has 2 divisors, whose sum is σ = 51330380. Its totient is φ = 51330378.

The previous prime is 51330317. The next prime is 51330403. The reversal of 51330379 is 97303315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51330379 - 2¹¹ = 51328331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51330379.

It is not a weakly prime, because it can be changed into another prime (51340379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25665189 + 25665190.

It is an arithmetic number, because the mean of its divisors is an integer number (25665190).

Almost surely, 2^51330379 is an apocalyptic number.

51330379 is a deficient number, since it is larger than the sum of its proper divisors (1).

51330379 is an equidigital number, since it uses as much as digits as its factorization.

51330379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8505, while the sum is 31.

The square root of 51330379 is about 7164.5222450628. The cubic root of 51330379 is about 371.6420300006.

The spelling of 51330379 in words is "fifty-one million, three hundred thirty thousand, three hundred seventy-nine".