1144445501 has 4 divisors (see below), whose sum is σ = 1145810400. Its totient is φ = 1143080604.

The previous prime is 1144445453. The next prime is 1144445503. The reversal of 1144445501 is 1055444411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1055444411 = 7 ⋅150777773.

It is a cyclic number.

It is not a de Polignac number, because 1144445501 - 2⁶ = 1144445437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144445503) 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, 681191 + ... + 682868.

It is an arithmetic number, because the mean of its divisors is an integer number (286452600).

Almost surely, 2^1144445501 is an apocalyptic number.

It is an amenable number.

1144445501 is a deficient number, since it is larger than the sum of its proper divisors (1364899).

1144445501 is an equidigital number, since it uses as much as digits as its factorization.

1144445501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364898.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 1144445501 is about 33829.6541661306. The cubic root of 1144445501 is about 1046.0000502689. Note that the first 4 decimals are identical.

Adding to 1144445501 its reverse (1055444411), we get a palindrome (2199889912).

The spelling of 1144445501 in words is "one billion, one hundred forty-four million, four hundred forty-five thousand, five hundred one".