5535115121 has 4 divisors (see below), whose sum is σ = 5542313700. Its totient is φ = 5527916544.

The previous prime is 5535115111. The next prime is 5535115123. The reversal of 5535115121 is 1215115355.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1215115355 = 5 ⋅243023071.

It can be written as a sum of positive squares in 2 ways, for example, as 2301600625 + 3233514496 = 47975^2 + 56864^2 .

It is a cyclic number.

It is not a de Polignac number, because 5535115121 - 2¹⁰ = 5535114097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5535115123) 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, 3598136 + ... + 3599673.

It is an arithmetic number, because the mean of its divisors is an integer number (1385578425).

Almost surely, 2^5535115121 is an apocalyptic number.

It is an amenable number.

5535115121 is a deficient number, since it is larger than the sum of its proper divisors (7198579).

5535115121 is an equidigital number, since it uses as much as digits as its factorization.

5535115121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7198578.

The product of its digits is 3750, while the sum is 29.

The square root of 5535115121 is about 74398.3542895943. The cubic root of 5535115121 is about 1768.9228256069.

The spelling of 5535115121 in words is "five billion, five hundred thirty-five million, one hundred fifteen thousand, one hundred twenty-one".