2551369 has 2 divisors, whose sum is σ = 2551370. Its totient is φ = 2551368.

The previous prime is 2551357. The next prime is 2551397. The reversal of 2551369 is 9631552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2286144 + 265225 = 1512^2 + 515^2 .

It is a cyclic number.

It is not a de Polignac number, because 2551369 - 2⁹ = 2550857 is a prime.

It is a super-2 number, since 2×2551369² = 13018967548322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2551369.

It is not a weakly prime, because it can be changed into another prime (2551349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275684 + 1275685.

It is an arithmetic number, because the mean of its divisors is an integer number (1275685).

2^2551369 is an apocalyptic number.

It is an amenable number.

2551369 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551369 is an equidigital number, since it uses as much as digits as its factorization.

2551369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 31.

The square root of 2551369 is about 1597.3005352782. The cubic root of 2551369 is about 136.6441651103.

The spelling of 2551369 in words is "two million, five hundred fifty-one thousand, three hundred sixty-nine".