5061636121 has 4 divisors (see below), whose sum is σ = 5069388132. Its totient is φ = 5053884112.

The previous prime is 5061636091. The next prime is 5061636169. The reversal of 5061636121 is 1216361605.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1216361605 = 5 ⋅243272321.

It can be written as a sum of positive squares in 2 ways, for example, as 438316096 + 4623320025 = 20936^2 + 67995^2 .

It is a cyclic number.

It is not a de Polignac number, because 5061636121 - 2¹¹ = 5061634073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5061637121) 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, 3875026 + ... + 3876331.

It is an arithmetic number, because the mean of its divisors is an integer number (1267347033).

Almost surely, 2^5061636121 is an apocalyptic number.

It is an amenable number.

5061636121 is a deficient number, since it is larger than the sum of its proper divisors (7752011).

5061636121 is an equidigital number, since it uses as much as digits as its factorization.

5061636121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7752010.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 5061636121 is about 71145.1763719790. The cubic root of 5061636121 is about 1716.9736896720.

Adding to 5061636121 its reverse (1216361605), we get a palindrome (6277997726).

The spelling of 5061636121 in words is "five billion, sixty-one million, six hundred thirty-six thousand, one hundred twenty-one".