50665669 has 2 divisors, whose sum is σ = 50665670. Its totient is φ = 50665668.

The previous prime is 50665649. The next prime is 50665673. The reversal of 50665669 is 96656605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50552100 + 113569 = 7110^2 + 337^2 .

It is a cyclic number.

It is not a de Polignac number, because 50665669 - 2⁷ = 50665541 is a prime.

It is a super-2 number, since 2×50665669² = 5134020030435122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50665649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25332834 + 25332835.

It is an arithmetic number, because the mean of its divisors is an integer number (25332835).

Almost surely, 2^50665669 is an apocalyptic number.

It is an amenable number.

50665669 is a deficient number, since it is larger than the sum of its proper divisors (1).

50665669 is an equidigital number, since it uses as much as digits as its factorization.

50665669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 43.

The square root of 50665669 is about 7117.9820876425. The cubic root of 50665669 is about 370.0308447624.

The spelling of 50665669 in words is "fifty million, six hundred sixty-five thousand, six hundred sixty-nine".