2551271369 has 2 divisors, whose sum is σ = 2551271370. Its totient is φ = 2551271368.

The previous prime is 2551271353. The next prime is 2551271383. The reversal of 2551271369 is 9631721552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2441545744 + 109725625 = 49412^2 + 10475^2 .

It is a cyclic number.

It is not a de Polignac number, because 2551271369 - 2⁴ = 2551271353 is a prime.

It is a super-2 number, since 2×2551271369² = 13017971196558268322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2551271339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275635684 + 1275635685.

It is an arithmetic number, because the mean of its divisors is an integer number (1275635685).

Almost surely, 2^2551271369 is an apocalyptic number.

It is an amenable number.

2551271369 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551271369 is an equidigital number, since it uses as much as digits as its factorization.

2551271369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 41.

The square root of 2551271369 is about 50510.1115520447. Note that the first 3 decimals coincide. The cubic root of 2551271369 is about 1366.4242214057.

The spelling of 2551271369 in words is "two billion, five hundred fifty-one million, two hundred seventy-one thousand, three hundred sixty-nine".