1161444255 has 16 divisors (see below), whose sum is σ = 1956117120. Its totient is φ = 586834848.

The previous prime is 1161444247. The next prime is 1161444257. The reversal of 1161444255 is 5524441611.

It is not a de Polignac number, because 1161444255 - 2³ = 1161444247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161444257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2037337 + ... + 2037906.

It is an arithmetic number, because the mean of its divisors is an integer number (122257320).

Almost surely, 2^1161444255 is an apocalyptic number.

1161444255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1161444255 is a deficient number, since it is larger than the sum of its proper divisors (794672865).

1161444255 is a wasteful number, since it uses less digits than its factorization.

1161444255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4075270.

The product of its digits is 19200, while the sum is 33.

The square root of 1161444255 is about 34079.9685299150. The cubic root of 1161444255 is about 1051.1534580496.

Adding to 1161444255 its reverse (5524441611), we get a palindrome (6685885866).

The spelling of 1161444255 in words is "one billion, one hundred sixty-one million, four hundred forty-four thousand, two hundred fifty-five".