2251279 has 2 divisors, whose sum is σ = 2251280. Its totient is φ = 2251278.

The previous prime is 2251229. The next prime is 2251297. The reversal of 2251279 is 9721522.

Together with next prime (2251297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2251279 - 2¹¹ = 2249231 is a prime.

2251279 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2251229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125639 + 1125640.

It is an arithmetic number, because the mean of its divisors is an integer number (1125640).

2^2251279 is an apocalyptic number.

2251279 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251279 is an equidigital number, since it uses as much as digits as its factorization.

2251279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 28.

The square root of 2251279 is about 1500.4262727638. The cubic root of 2251279 is about 131.0618941054.

The spelling of 2251279 in words is "two million, two hundred fifty-one thousand, two hundred seventy-nine".