50995309 has 8 divisors (see below), whose sum is σ = 51728760. Its totient is φ = 50265600.

The previous prime is 50995303. The next prime is 50995313. The reversal of 50995309 is 90359905.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4796100 + 46199209 = 2190^2 + 6797^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50995309 - 2⁵ = 50995277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50995303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36789 + ... + 38149.

It is an arithmetic number, because the mean of its divisors is an integer number (6466095).

Almost surely, 2^50995309 is an apocalyptic number.

It is an amenable number.

50995309 is a deficient number, since it is larger than the sum of its proper divisors (733451).

50995309 is a wasteful number, since it uses less digits than its factorization.

50995309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1871.

The product of its (nonzero) digits is 54675, while the sum is 40.

The square root of 50995309 is about 7141.0999852964. The cubic root of 50995309 is about 370.8316064838.

The spelling of 50995309 in words is "fifty million, nine hundred ninety-five thousand, three hundred nine".