26655557 has 2 divisors, whose sum is σ = 26655558. Its totient is φ = 26655556.

The previous prime is 26655539. The next prime is 26655569. The reversal of 26655557 is 75555662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25140196 + 1515361 = 5014^2 + 1231^2 .

It is a cyclic number.

It is not a de Polignac number, because 26655557 - 2⁶ = 26655493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26654557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13327778 + 13327779.

It is an arithmetic number, because the mean of its divisors is an integer number (13327779).

Almost surely, 2^26655557 is an apocalyptic number.

It is an amenable number.

26655557 is a deficient number, since it is larger than the sum of its proper divisors (1).

26655557 is an equidigital number, since it uses as much as digits as its factorization.

26655557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 315000, while the sum is 41.

The square root of 26655557 is about 5162.9019940340. The cubic root of 26655557 is about 298.7188215801.

The spelling of 26655557 in words is "twenty-six million, six hundred fifty-five thousand, five hundred fifty-seven".