1440221055 has 64 divisors (see below), whose sum is σ = 2934005760. Its totient is φ = 586768896.

The previous prime is 1440221053. The next prime is 1440221129. The reversal of 1440221055 is 5501220441.

It is not a de Polignac number, because 1440221055 - 2¹ = 1440221053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440221053) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21394 + ... + 57776.

It is an arithmetic number, because the mean of its divisors is an integer number (45843840).

Almost surely, 2^1440221055 is an apocalyptic number.

1440221055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1440221055 is an abundant number, since it is smaller than the sum of its proper divisors (1493784705).

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

1440221055 is a wasteful number, since it uses less digits than its factorization.

1440221055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36440.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1440221055 is about 37950.2444656158. The cubic root of 1440221055 is about 1129.3010152339.

Adding to 1440221055 its reverse (5501220441), we get a palindrome (6941441496).

The spelling of 1440221055 in words is "one billion, four hundred forty million, two hundred twenty-one thousand, fifty-five".