50667021 has 36 divisors (see below), whose sum is σ = 79830036. Its totient is φ = 30858240.

The previous prime is 50667013. The next prime is 50667041. The reversal of 50667021 is 12076605.

It can be written as a sum of positive squares in 6 ways, for example, as 455625 + 50211396 = 675^2 + 7086^2 .

It is not a de Polignac number, because 50667021 - 2³ = 50667013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50667011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 257095 + ... + 257291.

It is an arithmetic number, because the mean of its divisors is an integer number (2217501).

Almost surely, 2^50667021 is an apocalyptic number.

50667021 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

50667021 is a deficient number, since it is larger than the sum of its proper divisors (29163015).

50667021 is a wasteful number, since it uses less digits than its factorization.

50667021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 50667021 is about 7118.0770577453. The cubic root of 50667021 is about 370.0341361249.

The spelling of 50667021 in words is "fifty million, six hundred sixty-seven thousand, twenty-one".