5216121 has 6 divisors (see below), whose sum is σ = 7534410. Its totient is φ = 3477408.

The previous prime is 5216119. The next prime is 5216129. The reversal of 5216121 is 1216125.

5216121 is a `hidden beast` number, since 52 + 1 + 612 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3861225 + 1354896 = 1965^2 + 1164^2 .

It is not a de Polignac number, because 5216121 - 2¹ = 5216119 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 5216094 and 5216103.

It is not an unprimeable number, because it can be changed into a prime (5216129) 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, 289776 + ... + 289793.

It is an arithmetic number, because the mean of its divisors is an integer number (1255735).

Almost surely, 2^5216121 is an apocalyptic number.

It is an amenable number.

5216121 is a deficient number, since it is larger than the sum of its proper divisors (2318289).

5216121 is a wasteful number, since it uses less digits than its factorization.

5216121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579575 (or 579572 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 5216121 is about 2283.8828779077. The cubic root of 5216121 is about 173.4266702271.

It can be divided in two parts, 5216 and 121, that multiplied together give a palindrome (631136).

The spelling of 5216121 in words is "five million, two hundred sixteen thousand, one hundred twenty-one".