50111021 has 2 divisors, whose sum is σ = 50111022. Its totient is φ = 50111020.

The previous prime is 50111003. The next prime is 50111041. The reversal of 50111021 is 12011105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29052100 + 21058921 = 5390^2 + 4589^2 .

It is a cyclic number.

It is not a de Polignac number, because 50111021 - 2¹⁴ = 50094637 is a prime.

It is a super-2 number, since 2×50111021² = 5022228851324882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 50110993 and 50111011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50111041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25055510 + 25055511.

It is an arithmetic number, because the mean of its divisors is an integer number (25055511).

Almost surely, 2^50111021 is an apocalyptic number.

It is an amenable number.

50111021 is a deficient number, since it is larger than the sum of its proper divisors (1).

50111021 is an equidigital number, since it uses as much as digits as its factorization.

50111021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10, while the sum is 11.

The square root of 50111021 is about 7078.9138291125. The cubic root of 50111021 is about 368.6756182061.

Adding to 50111021 its reverse (12011105), we get a palindrome (62122126).

The spelling of 50111021 in words is "fifty million, one hundred eleven thousand, twenty-one".