266055655 has 4 divisors (see below), whose sum is σ = 319266792. Its totient is φ = 212844520.

The previous prime is 266055653. The next prime is 266055667. The reversal of 266055655 is 556550662.

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

It is not a de Polignac number, because 266055655 - 2¹ = 266055653 is a prime.

It is a super-2 number, since 2×266055655² = 141571223114958050, 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 (266055653) 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, 26605561 + ... + 26605570.

It is an arithmetic number, because the mean of its divisors is an integer number (79816698).

Almost surely, 2^266055655 is an apocalyptic number.

266055655 is a deficient number, since it is larger than the sum of its proper divisors (53211137).

266055655 is an equidigital number, since it uses as much as digits as its factorization.

266055655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53211136.

The product of its (nonzero) digits is 270000, while the sum is 40.

The square root of 266055655 is about 16311.2125545589. The cubic root of 266055655 is about 643.1676093900.

The spelling of 266055655 in words is "two hundred sixty-six million, fifty-five thousand, six hundred fifty-five".