2651365121 has 8 divisors (see below), whose sum is σ = 2704945320. Its totient is φ = 2597916672.

The previous prime is 2651365063. The next prime is 2651365133. The reversal of 2651365121 is 1215631562.

It can be written as a sum of positive squares in 4 ways, for example, as 64625521 + 2586739600 = 8039^2 + 50860^2 .

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-2651365121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2651365151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8231 + ... + 73283.

It is an arithmetic number, because the mean of its divisors is an integer number (338118165).

Almost surely, 2^2651365121 is an apocalyptic number.

It is an amenable number.

2651365121 is a deficient number, since it is larger than the sum of its proper divisors (53580199).

2651365121 is an equidigital number, since it uses as much as digits as its factorization.

2651365121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65875.

The product of its digits is 10800, while the sum is 32.

The square root of 2651365121 is about 51491.4082250622. The cubic root of 2651365121 is about 1384.0650844867.

Adding to 2651365121 its reverse (1215631562), we get a palindrome (3866996683).

The spelling of 2651365121 in words is "two billion, six hundred fifty-one million, three hundred sixty-five thousand, one hundred twenty-one".