50021021 has 8 divisors (see below), whose sum is σ = 55266624. Its totient is φ = 45031360.

The previous prime is 50020981. The next prime is 50021033. The reversal of 50021021 is 12012005.

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 50021021 - 2²² = 45826717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50020993 and 50021011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50021071) 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, 63575 + ... + 64356.

It is an arithmetic number, because the mean of its divisors is an integer number (6908328).

Almost surely, 2^50021021 is an apocalyptic number.

It is an amenable number.

50021021 is a deficient number, since it is larger than the sum of its proper divisors (5245603).

50021021 is a wasteful number, since it uses less digits than its factorization.

50021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127971.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 50021021 is about 7072.5540648340. The cubic root of 50021021 is about 368.4547706480.

Adding to 50021021 its reverse (12012005), we get a palindrome (62033026).

The spelling of 50021021 in words is "fifty million, twenty-one thousand, twenty-one".