26655551 has 16 divisors (see below), whose sum is σ = 30481920. Its totient is φ = 23121120.

The previous prime is 26655539. The next prime is 26655557. The reversal of 26655551 is 15555662.

It is a cyclic number.

It is not a de Polignac number, because 26655551 - 2¹⁰ = 26654527 is a prime.

It is a super-2 number, since 2×26655551² = 1421036798227202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26655557) 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 in 15 ways as a sum of consecutive naturals, for example, 16886 + ... + 18396.

It is an arithmetic number, because the mean of its divisors is an integer number (1905120).

Almost surely, 2^26655551 is an apocalyptic number.

26655551 is a deficient number, since it is larger than the sum of its proper divisors (3826369).

26655551 is a wasteful number, since it uses less digits than its factorization.

26655551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606.

The product of its digits is 45000, while the sum is 35.

The square root of 26655551 is about 5162.9014129654. The cubic root of 26655551 is about 298.7187991668.

The spelling of 26655551 in words is "twenty-six million, six hundred fifty-five thousand, five hundred fifty-one".