51959779 has 2 divisors, whose sum is σ = 51959780. Its totient is φ = 51959778.

The previous prime is 51959749. The next prime is 51959797. The reversal of 51959779 is 97795915.

It is a happy number.

Together with next prime (51959797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51959779 - 2⁷ = 51959651 is a prime.

It is not a weakly prime, because it can be changed into another prime (51959749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25979889 + 25979890.

It is an arithmetic number, because the mean of its divisors is an integer number (25979890).

Almost surely, 2^51959779 is an apocalyptic number.

51959779 is a deficient number, since it is larger than the sum of its proper divisors (1).

51959779 is an equidigital number, since it uses as much as digits as its factorization.

51959779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 893025, while the sum is 52.

The square root of 51959779 is about 7208.3131868697. The cubic root of 51959779 is about 373.1548566726.

The spelling of 51959779 in words is "fifty-one million, nine hundred fifty-nine thousand, seven hundred seventy-nine".