26279551 has 2 divisors, whose sum is σ = 26279552. Its totient is φ = 26279550.

The previous prime is 26279503. The next prime is 26279567. The reversal of 26279551 is 15597262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26279551 - 2⁹ = 26279039 is a prime.

It is a super-2 number, since 2×26279551² = 1381229601523202, 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 26279551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26279581) 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, 13139775 + 13139776.

It is an arithmetic number, because the mean of its divisors is an integer number (13139776).

Almost surely, 2^26279551 is an apocalyptic number.

26279551 is a deficient number, since it is larger than the sum of its proper divisors (1).

26279551 is an equidigital number, since it uses as much as digits as its factorization.

26279551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 37.

The square root of 26279551 is about 5126.3584541076. The cubic root of 26279551 is about 297.3075788867.

The spelling of 26279551 in words is "twenty-six million, two hundred seventy-nine thousand, five hundred fifty-one".