1264145055 has 16 divisors (see below), whose sum is σ = 2036210400. Its totient is φ = 669684608.

The previous prime is 1264145039. The next prime is 1264145083. The reversal of 1264145055 is 5505414621.

It is a cyclic number.

It is not a de Polignac number, because 1264145055 - 2⁴ = 1264145039 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 (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280572 + ... + 285041.

It is an arithmetic number, because the mean of its divisors is an integer number (127263150).

Almost surely, 2^1264145055 is an apocalyptic number.

1264145055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1264145055 is a deficient number, since it is larger than the sum of its proper divisors (772065345).

1264145055 is a wasteful number, since it uses less digits than its factorization.

1264145055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565770.

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 1264145055 is about 35554.8176060573. The cubic root of 1264145055 is about 1081.2653935238.

Adding to 1264145055 its reverse (5505414621), we get a palindrome (6769559676).

The spelling of 1264145055 in words is "one billion, two hundred sixty-four million, one hundred forty-five thousand, fifty-five".