50779905 has 32 divisors (see below), whose sum is σ = 89071488. Its totient is φ = 24499200.

The previous prime is 50779811. The next prime is 50779907. The reversal of 50779905 is 50997705.

It is a happy number.

It is not a de Polignac number, because 50779905 - 2¹³ = 50771713 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50779907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39127 + ... + 40403.

It is an arithmetic number, because the mean of its divisors is an integer number (2783484).

Almost surely, 2^50779905 is an apocalyptic number.

50779905 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

50779905 is a deficient number, since it is larger than the sum of its proper divisors (38291583).

50779905 is a wasteful number, since it uses less digits than its factorization.

50779905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537.

The product of its (nonzero) digits is 99225, while the sum is 42.

The square root of 50779905 is about 7126.0020348018. The cubic root of 50779905 is about 370.3087391418.

The spelling of 50779905 in words is "fifty million, seven hundred seventy-nine thousand, nine hundred five".