51945079 has 2 divisors, whose sum is σ = 51945080. Its totient is φ = 51945078.

The previous prime is 51945071. The next prime is 51945133. The reversal of 51945079 is 97054915.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51945079 - 2³ = 51945071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51945071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25972539 + 25972540.

It is an arithmetic number, because the mean of its divisors is an integer number (25972540).

Almost surely, 2^51945079 is an apocalyptic number.

51945079 is a deficient number, since it is larger than the sum of its proper divisors (1).

51945079 is an equidigital number, since it uses as much as digits as its factorization.

51945079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 51945079 is about 7207.2934587125. The cubic root of 51945079 is about 373.1196634657.

The spelling of 51945079 in words is "fifty-one million, nine hundred forty-five thousand, seventy-nine".