50656561 has 4 divisors (see below), whose sum is σ = 50744932. Its totient is φ = 50568192.

The previous prime is 50656547. The next prime is 50656577. The reversal of 50656561 is 16565605.

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 23824161 + 26832400 = 4881^2 + 5180^2 .

It is a cyclic number.

It is not a de Polignac number, because 50656561 - 2⁷ = 50656433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50656531) 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, 43320 + ... + 44473.

It is an arithmetic number, because the mean of its divisors is an integer number (12686233).

Almost surely, 2^50656561 is an apocalyptic number.

It is an amenable number.

50656561 is a deficient number, since it is larger than the sum of its proper divisors (88371).

50656561 is an equidigital number, since it uses as much as digits as its factorization.

50656561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88370.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 50656561 is about 7117.3422708199. The cubic root of 50656561 is about 370.0086703593.

The spelling of 50656561 in words is "fifty million, six hundred fifty-six thousand, five hundred sixty-one".