1377261055 has 4 divisors (see below), whose sum is σ = 1652713272. Its totient is φ = 1101808840.

The previous prime is 1377261049. The next prime is 1377261071. The reversal of 1377261055 is 5501627731.

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

It is not a de Polignac number, because 1377261055 - 2³ = 1377261047 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 137726101 + ... + 137726110.

It is an arithmetic number, because the mean of its divisors is an integer number (413178318).

Almost surely, 2^1377261055 is an apocalyptic number.

1377261055 is a deficient number, since it is larger than the sum of its proper divisors (275452217).

1377261055 is an equidigital number, since it uses as much as digits as its factorization.

1377261055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275452216.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 1377261055 is about 37111.4679715044. The cubic root of 1377261055 is about 1112.5992316485.

Adding to 1377261055 its reverse (5501627731), we get a palindrome (6878888786).

The spelling of 1377261055 in words is "one billion, three hundred seventy-seven million, two hundred sixty-one thousand, fifty-five".