1377261056 has 80 divisors (see below), whose sum is σ = 2990760960. Its totient is φ = 631203840.

The previous prime is 1377261049. The next prime is 1377261071. The reversal of 1377261056 is 6501627731.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299285 + ... + 303851.

It is an arithmetic number, because the mean of its divisors is an integer number (37384512).

Almost surely, 2^1377261056 is an apocalyptic number.

1377261056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1377261056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1495380480).

1377261056 is an abundant number, since it is smaller than the sum of its proper divisors (1613499904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1377261056 is an equidigital number, since it uses as much as digits as its factorization.

1377261056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4635 (or 4619 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 1377261056 is about 37111.4679849774. The cubic root of 1377261056 is about 1112.5992319178.

Adding to 1377261056 its reverse (6501627731), we get a palindrome (7878888787).

The spelling of 1377261056 in words is "one billion, three hundred seventy-seven million, two hundred sixty-one thousand, fifty-six".