50109021 has 6 divisors (see below), whose sum is σ = 72379710. Its totient is φ = 33406008.

The previous prime is 50109001. The next prime is 50109049. The reversal of 50109021 is 12090105.

It can be written as a sum of positive squares in only one way, i.e., 49491225 + 617796 = 7035^2 + 786^2 .

It is not a de Polignac number, because 50109021 - 2⁶ = 50108957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50108985 and 50109003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50109001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2783826 + ... + 2783843.

It is an arithmetic number, because the mean of its divisors is an integer number (12063285).

Almost surely, 2^50109021 is an apocalyptic number.

It is an amenable number.

50109021 is a deficient number, since it is larger than the sum of its proper divisors (22270689).

50109021 is a wasteful number, since it uses less digits than its factorization.

50109021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5567675 (or 5567672 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 50109021 is about 7078.7725630931. The cubic root of 50109021 is about 368.6707133566.

Adding to 50109021 its reverse (12090105), we get a palindrome (62199126).

The spelling of 50109021 in words is "fifty million, one hundred nine thousand, twenty-one".