50979009 has 16 divisors (see below), whose sum is σ = 69624000. Its totient is φ = 33168576.

The previous prime is 50978953. The next prime is 50979023. The reversal of 50979009 is 90097905.

It is a de Polignac number, because none of the positive numbers 2^k-50979009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50979059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25407 + ... + 27339.

It is an arithmetic number, because the mean of its divisors is an integer number (4351500).

Almost surely, 2^50979009 is an apocalyptic number.

50979009 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

50979009 is a deficient number, since it is larger than the sum of its proper divisors (18644991).

50979009 is a wasteful number, since it uses less digits than its factorization.

50979009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144.

The product of its (nonzero) digits is 25515, while the sum is 39.

The square root of 50979009 is about 7139.9586133254. The cubic root of 50979009 is about 370.7920917426.

The spelling of 50979009 in words is "fifty million, nine hundred seventy-nine thousand, nine".