50140021 has 16 divisors (see below), whose sum is σ = 54895104. Its totient is φ = 45609984.

The previous prime is 50140009. The next prime is 50140033. The reversal of 50140021 is 12004105.

It is an interprime number because it is at equal distance from previous prime (50140009) and next prime (50140033).

It is a cyclic number.

It is not a de Polignac number, because 50140021 - 2¹¹ = 50137973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50139983 and 50140010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50140001) 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, 82300 + ... + 82906.

It is an arithmetic number, because the mean of its divisors is an integer number (3430944).

Almost surely, 2^50140021 is an apocalyptic number.

It is an amenable number.

50140021 is a deficient number, since it is larger than the sum of its proper divisors (4755083).

50140021 is a wasteful number, since it uses less digits than its factorization.

50140021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 50140021 is about 7080.9618696897. The cubic root of 50140021 is about 368.7467238625.

Adding to 50140021 its reverse (12004105), we get a palindrome (62144126).

The spelling of 50140021 in words is "fifty million, one hundred forty thousand, twenty-one".