50916639 has 8 divisors (see below), whose sum is σ = 69002032. Its totient is φ = 33387840.

The previous prime is 50916631. The next prime is 50916643. The reversal of 50916639 is 93661905.

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

It is not a de Polignac number, because 50916639 - 2³ = 50916631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50916597 and 50916606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50916631) 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, 138934 + ... + 139299.

It is an arithmetic number, because the mean of its divisors is an integer number (8625254).

Almost surely, 2^50916639 is an apocalyptic number.

50916639 is a deficient number, since it is larger than the sum of its proper divisors (18085393).

50916639 is a wasteful number, since it uses less digits than its factorization.

50916639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278297.

The product of its (nonzero) digits is 43740, while the sum is 39.

The square root of 50916639 is about 7135.5896042303. The cubic root of 50916639 is about 370.6408154893.

The spelling of 50916639 in words is "fifty million, nine hundred sixteen thousand, six hundred thirty-nine".