1441220251 has 4 divisors (see below), whose sum is σ = 1442271312. Its totient is φ = 1440169192.

The previous prime is 1441220201. The next prime is 1441220299. The reversal of 1441220251 is 1520221441.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1441220251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1441220201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523471 + ... + 526216.

It is an arithmetic number, because the mean of its divisors is an integer number (360567828).

Almost surely, 2^1441220251 is an apocalyptic number.

1441220251 is a deficient number, since it is larger than the sum of its proper divisors (1051061).

1441220251 is a wasteful number, since it uses less digits than its factorization.

1441220251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051060.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1441220251 is about 37963.4067359609. The cubic root of 1441220251 is about 1129.5621168663.

Adding to 1441220251 its reverse (1520221441), we get a palindrome (2961441692).

The spelling of 1441220251 in words is "one billion, four hundred forty-one million, two hundred twenty thousand, two hundred fifty-one".