2551511297 has 2 divisors, whose sum is σ = 2551511298. Its totient is φ = 2551511296.

The previous prime is 2551511201. The next prime is 2551511323. The reversal of 2551511297 is 7921151552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1858558321 + 692952976 = 43111^2 + 26324^2 .

It is a cyclic number.

It is not a de Polignac number, because 2551511297 - 2¹² = 2551507201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2551511297.

It is not a weakly prime, because it can be changed into another prime (2551511797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275755648 + 1275755649.

It is an arithmetic number, because the mean of its divisors is an integer number (1275755649).

Almost surely, 2^2551511297 is an apocalyptic number.

It is an amenable number.

2551511297 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551511297 is an equidigital number, since it uses as much as digits as its factorization.

2551511297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31500, while the sum is 38.

The square root of 2551511297 is about 50512.4865454078. The cubic root of 2551511297 is about 1366.4670540575.

The spelling of 2551511297 in words is "two billion, five hundred fifty-one million, five hundred eleven thousand, two hundred ninety-seven".