50563309 has 4 divisors (see below), whose sum is σ = 50626620. Its totient is φ = 50500000.

The previous prime is 50563307. The next prime is 50563339. The reversal of 50563309 is 90336505.

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 48930025 + 1633284 = 6995^2 + 1278^2 .

It is a cyclic number.

It is not a de Polignac number, because 50563309 - 2¹ = 50563307 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50563307) 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, 30442 + ... + 32059.

It is an arithmetic number, because the mean of its divisors is an integer number (12656655).

Almost surely, 2^50563309 is an apocalyptic number.

It is an amenable number.

50563309 is a deficient number, since it is larger than the sum of its proper divisors (63311).

50563309 is an equidigital number, since it uses as much as digits as its factorization.

50563309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63310.

The product of its (nonzero) digits is 12150, while the sum is 31.

The square root of 50563309 is about 7110.7882122870. The cubic root of 50563309 is about 369.7814852919.

The spelling of 50563309 in words is "fifty million, five hundred sixty-three thousand, three hundred nine".