50823509 has 6 divisors (see below), whose sum is σ = 55863990. Its totient is φ = 46203080.

The previous prime is 50823481. The next prime is 50823511. The reversal of 50823509 is 90532805.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 33988900 + 16834609 = 5830^2 + 4103^2 .

It is not a de Polignac number, because 50823509 - 2²⁴ = 34046293 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50823209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 209894 + ... + 210135.

It is an arithmetic number, because the mean of its divisors is an integer number (9310665).

Almost surely, 2^50823509 is an apocalyptic number.

It is an amenable number.

50823509 is a deficient number, since it is larger than the sum of its proper divisors (5040481).

50823509 is a wasteful number, since it uses less digits than its factorization.

50823509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420051 (or 420040 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 50823509 is about 7129.0608778436. The cubic root of 50823509 is about 370.4147018105.

The spelling of 50823509 in words is "fifty million, eight hundred twenty-three thousand, five hundred nine".