50909289 has 8 divisors (see below), whose sum is σ = 68038272. Its totient is φ = 33859920.

The previous prime is 50909269. The next prime is 50909317. The reversal of 50909289 is 98290905.

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

It is a de Polignac number, because none of the positive numbers 2^k-50909289 is a prime.

It is a super-3 number, since 3×50909289³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50909289.

It is not an unprimeable number, because it can be changed into a prime (50909269) 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, 18394 + ... + 20979.

It is an arithmetic number, because the mean of its divisors is an integer number (8504784).

Almost surely, 2^50909289 is an apocalyptic number.

It is an amenable number.

50909289 is a deficient number, since it is larger than the sum of its proper divisors (17128983).

50909289 is a wasteful number, since it uses less digits than its factorization.

50909289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39807.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 50909289 is about 7135.0745616286. The cubic root of 50909289 is about 370.6229801861.

The spelling of 50909289 in words is "fifty million, nine hundred nine thousand, two hundred eighty-nine".