5200121 has 4 divisors (see below), whose sum is σ = 5219172. Its totient is φ = 5181072.

The previous prime is 5200103. The next prime is 5200123. The reversal of 5200121 is 1210025.

5200121 = T₃₈ + T₃₉ + ... + T₃₁₄.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3610000 + 1590121 = 1900^2 + 1261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5200121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5200123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9110 + ... + 9663.

It is an arithmetic number, because the mean of its divisors is an integer number (1304793).

Almost surely, 2^5200121 is an apocalyptic number.

It is an amenable number.

5200121 is a deficient number, since it is larger than the sum of its proper divisors (19051).

5200121 is a wasteful number, since it uses less digits than its factorization.

5200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19050.

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

The square root of 5200121 is about 2280.3773810490. The cubic root of 5200121 is about 173.2491648389.

Adding to 5200121 its reverse (1210025), we get a palindrome (6410146).

The spelling of 5200121 in words is "five million, two hundred thousand, one hundred twenty-one".