55522135121 has 8 divisors (see below), whose sum is σ = 56237964384. Its totient is φ = 54807422400.

The previous prime is 55522135063. The next prime is 55522135129. The reversal of 55522135121 is 12153122555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55522135121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55522135129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178811 + ... + 378176.

It is an arithmetic number, because the mean of its divisors is an integer number (7029745548).

Almost surely, 2^55522135121 is an apocalyptic number.

It is an amenable number.

55522135121 is a deficient number, since it is larger than the sum of its proper divisors (715829263).

55522135121 is a wasteful number, since it uses less digits than its factorization.

55522135121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558271.

The product of its digits is 15000, while the sum is 32.

Adding to 55522135121 its reverse (12153122555), we get a palindrome (67675257676).

The spelling of 55522135121 in words is "fifty-five billion, five hundred twenty-two million, one hundred thirty-five thousand, one hundred twenty-one".