1266248055 has 16 divisors (see below), whose sum is σ = 2043928800. Its totient is φ = 669355008.

The previous prime is 1266248033. The next prime is 1266248107. The reversal of 1266248055 is 5508426621.

It is not a de Polignac number, because 1266248055 - 2⁵ = 1266248023 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371830 + ... + 375219.

It is an arithmetic number, because the mean of its divisors is an integer number (127745550).

Almost surely, 2^1266248055 is an apocalyptic number.

1266248055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1266248055 is a deficient number, since it is larger than the sum of its proper divisors (777680745).

1266248055 is a wasteful number, since it uses less digits than its factorization.

1266248055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747170.

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 1266248055 is about 35584.3793679193. The cubic root of 1266248055 is about 1081.8646500049.

The spelling of 1266248055 in words is "one billion, two hundred sixty-six million, two hundred forty-eight thousand, fifty-five".