26822251 has 2 divisors, whose sum is σ = 26822252. Its totient is φ = 26822250.

The previous prime is 26822233. The next prime is 26822287. The reversal of 26822251 is 15222862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26822251 - 2⁷ = 26822123 is a prime.

It is not a weakly prime, because it can be changed into another prime (26822221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13411125 + 13411126.

It is an arithmetic number, because the mean of its divisors is an integer number (13411126).

Almost surely, 2^26822251 is an apocalyptic number.

26822251 is the 3276-th centered pentagonal number.

26822251 is a deficient number, since it is larger than the sum of its proper divisors (1).

26822251 is an equidigital number, since it uses as much as digits as its factorization.

26822251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 28.

The square root of 26822251 is about 5179.0202741445. The cubic root of 26822251 is about 299.3402204037.

The spelling of 26822251 in words is "twenty-six million, eight hundred twenty-two thousand, two hundred fifty-one".