55013315121 has 6 divisors (see below), whose sum is σ = 79463677410. Its totient is φ = 36675543408.

The previous prime is 55013315107. The next prime is 55013315129. The reversal of 55013315121 is 12151331055.

55013315121 is a `hidden beast` number, since 5 + 501 + 3 + 3 + 151 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 54868377600 + 144937521 = 234240^2 + 12039^2 .

It is not a de Polignac number, because 55013315121 - 2⁶ = 55013315057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55013315129) 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, 3056295276 + ... + 3056295293.

It is an arithmetic number, because the mean of its divisors is an integer number (13243946235).

Almost surely, 2^55013315121 is an apocalyptic number.

It is an amenable number.

55013315121 is a deficient number, since it is larger than the sum of its proper divisors (24450362289).

55013315121 is a wasteful number, since it uses less digits than its factorization.

55013315121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6112590575 (or 6112590572 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

Adding to 55013315121 its reverse (12151331055), we get a palindrome (67164646176).

The spelling of 55013315121 in words is "fifty-five billion, thirteen million, three hundred fifteen thousand, one hundred twenty-one".