2251388851 has 2 divisors, whose sum is σ = 2251388852. Its totient is φ = 2251388850.

The previous prime is 2251388837. The next prime is 2251388903. The reversal of 2251388851 is 1588831522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2251388851 - 2¹¹ = 2251386803 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2251388798 and 2251388807.

It is not a weakly prime, because it can be changed into another prime (2251388651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125694425 + 1125694426.

It is an arithmetic number, because the mean of its divisors is an integer number (1125694426).

Almost surely, 2^2251388851 is an apocalyptic number.

2251388851 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251388851 is an equidigital number, since it uses as much as digits as its factorization.

2251388851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153600, while the sum is 43.

The square root of 2251388851 is about 47448.8024190284. The cubic root of 2251388851 is about 1310.6402578933.

The spelling of 2251388851 in words is "two billion, two hundred fifty-one million, three hundred eighty-eight thousand, eight hundred fifty-one".