50055509 has 6 divisors (see below), whose sum is σ = 58227894. Its totient is φ = 42904680.

The previous prime is 50055503. The next prime is 50055527. The reversal of 50055509 is 90555005.

It can be written as a sum of positive squares in only one way, i.e., 38812900 + 11242609 = 6230^2 + 3353^2 .

It is a de Polignac number, because none of the positive numbers 2^k-50055509 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 (50055503) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 510722 + ... + 510819.

It is an arithmetic number, because the mean of its divisors is an integer number (9704649).

Almost surely, 2^50055509 is an apocalyptic number.

It is an amenable number.

50055509 is a deficient number, since it is larger than the sum of its proper divisors (8172385).

50055509 is a wasteful number, since it uses less digits than its factorization.

50055509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021555 (or 1021548 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 29.

The square root of 50055509 is about 7074.9918021154. The cubic root of 50055509 is about 368.5394307140.

The spelling of 50055509 in words is "fifty million, fifty-five thousand, five hundred nine".