1301155056 has 80 divisors (see below), whose sum is σ = 3754000800. Its totient is φ = 431488512.

The previous prime is 1301155013. The next prime is 1301155069. The reversal of 1301155056 is 6505511031.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77460 + ... + 92748.

It is an arithmetic number, because the mean of its divisors is an integer number (46925010).

Almost surely, 2^1301155056 is an apocalyptic number.

1301155056 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 1301155056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1877000400).

1301155056 is an abundant number, since it is smaller than the sum of its proper divisors (2452845744).

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

1301155056 is a wasteful number, since it uses less digits than its factorization.

1301155056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15503 (or 15491 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 1301155056 is about 36071.5269430059. The cubic root of 1301155056 is about 1091.7160232474.

Adding to 1301155056 its reverse (6505511031), we get a palindrome (7806666087).

The spelling of 1301155056 in words is "one billion, three hundred one million, one hundred fifty-five thousand, fifty-six".