5250121 has 2 divisors, whose sum is σ = 5250122. Its totient is φ = 5250120.

The previous prime is 5250109. The next prime is 5250143. The reversal of 5250121 is 1210525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4260096 + 990025 = 2064^2 + 995^2 .

It is a cyclic number.

It is not a de Polignac number, because 5250121 - 2¹¹ = 5248073 is a prime.

It is an alternating number because its digits alternate between odd and even.

5250121 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5250095 and 5250104.

It is not a weakly prime, because it can be changed into another prime (5250151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2625060 + 2625061.

It is an arithmetic number, because the mean of its divisors is an integer number (2625061).

Almost surely, 2^5250121 is an apocalyptic number.

It is an amenable number.

5250121 is a deficient number, since it is larger than the sum of its proper divisors (1).

5250121 is an equidigital number, since it uses as much as digits as its factorization.

5250121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 5250121 is about 2291.3142516905. The cubic root of 5250121 is about 173.8026674697.

Adding to 5250121 its reverse (1210525), we get a palindrome (6460646).

The spelling of 5250121 in words is "five million, two hundred fifty thousand, one hundred twenty-one".