7051505121 has 12 divisors (see below), whose sum is σ = 10536732180. Its totient is φ = 4538899680.

The previous prime is 7051505099. The next prime is 7051505141. The reversal of 7051505121 is 1215051507.

7051505121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4779648225 + 2271856896 = 69135^2 + 47664^2 .

It is a de Polignac number, because none of the positive numbers 2^k-7051505121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7051505141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13508370 + ... + 13508891.

It is an arithmetic number, because the mean of its divisors is an integer number (878061015).

Almost surely, 2^7051505121 is an apocalyptic number.

It is an amenable number.

7051505121 is a deficient number, since it is larger than the sum of its proper divisors (3485227059).

7051505121 is a wasteful number, since it uses less digits than its factorization.

7051505121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27017296 (or 27017293 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 27.

The square root of 7051505121 is about 83973.2405055325. The cubic root of 7051505121 is about 1917.6114250720.

Adding to 7051505121 its reverse (1215051507), we get a palindrome (8266556628).

The spelling of 7051505121 in words is "seven billion, fifty-one million, five hundred five thousand, one hundred twenty-one".