50661577 has 4 divisors (see below), whose sum is σ = 50850180. Its totient is φ = 50472976.

The previous prime is 50661563. The next prime is 50661593. The reversal of 50661577 is 77516605.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11861136 + 38800441 = 3444^2 + 6229^2 .

It is a cyclic number.

It is not a de Polignac number, because 50661577 - 2⁷ = 50661449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50667577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93898 + ... + 94435.

It is an arithmetic number, because the mean of its divisors is an integer number (12712545).

Almost surely, 2^50661577 is an apocalyptic number.

It is an amenable number.

50661577 is a deficient number, since it is larger than the sum of its proper divisors (188603).

50661577 is a wasteful number, since it uses less digits than its factorization.

50661577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188602.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 50661577 is about 7117.6946408230. The cubic root of 50661577 is about 370.0208826782.

The spelling of 50661577 in words is "fifty million, six hundred sixty-one thousand, five hundred seventy-seven".