26055551 has 4 divisors (see below), whose sum is σ = 26348400. Its totient is φ = 25762704.

The previous prime is 26055529. The next prime is 26055553. The reversal of 26055551 is 15555062.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26055551 - 2⁶ = 26055487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26055553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146291 + ... + 146468.

It is an arithmetic number, because the mean of its divisors is an integer number (6587100).

Almost surely, 2^26055551 is an apocalyptic number.

26055551 is a deficient number, since it is larger than the sum of its proper divisors (292849).

26055551 is an equidigital number, since it uses as much as digits as its factorization.

26055551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292848.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 26055551 is about 5104.4638308053. The cubic root of 26055551 is about 296.4604434469.

The spelling of 26055551 in words is "twenty-six million, fifty-five thousand, five hundred fifty-one".