50168921 has 8 divisors (see below), whose sum is σ = 57949344. Its totient is φ = 42925120.

The previous prime is 50168893. The next prime is 50168947. The reversal of 50168921 is 12986105.

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

It is a cyclic number.

It is not a de Polignac number, because 50168921 - 2⁶ = 50168857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50168981) 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, 133955 + ... + 134328.

It is an arithmetic number, because the mean of its divisors is an integer number (7243668).

Almost surely, 2^50168921 is an apocalyptic number.

It is an amenable number.

50168921 is a deficient number, since it is larger than the sum of its proper divisors (7780423).

50168921 is a wasteful number, since it uses less digits than its factorization.

50168921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268311.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 50168921 is about 7083.0022589295. The cubic root of 50168921 is about 368.8175570565.

Subtracting from 50168921 its sum of digits (32), we obtain a square (50168889 = 7083²).

The spelling of 50168921 in words is "fifty million, one hundred sixty-eight thousand, nine hundred twenty-one".