2551111201 has 2 divisors, whose sum is σ = 2551111202. Its totient is φ = 2551111200.

The previous prime is 2551111163. The next prime is 2551111253. The reversal of 2551111201 is 1021111552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1488416400 + 1062694801 = 38580^2 + 32599^2 .

It is a cyclic number.

It is not a de Polignac number, because 2551111201 - 2¹¹ = 2551109153 is a prime.

It is not a weakly prime, because it can be changed into another prime (2551111301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275555600 + 1275555601.

It is an arithmetic number, because the mean of its divisors is an integer number (1275555601).

Almost surely, 2^2551111201 is an apocalyptic number.

It is an amenable number.

2551111201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551111201 is an equidigital number, since it uses as much as digits as its factorization.

2551111201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100, while the sum is 19.

The square root of 2551111201 is about 50508.5260228409. The cubic root of 2551111201 is about 1366.3956262489.

Adding to 2551111201 its reverse (1021111552), we get a palindrome (3572222753).

The spelling of 2551111201 in words is "two billion, five hundred fifty-one million, one hundred eleven thousand, two hundred one".