1002544401 has 12 divisors (see below), whose sum is σ = 1397373488. Its totient is φ = 639302664.

The previous prime is 1002544369. The next prime is 1002544421. The reversal of 1002544401 is 1044452001.

It is a happy number.

1002544401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1002544401 - 2⁵ = 1002544369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002544421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 314275 + ... + 317448.

Almost surely, 2^1002544401 is an apocalyptic number.

It is an amenable number.

1002544401 is a deficient number, since it is larger than the sum of its proper divisors (394829087).

1002544401 is an equidigital number, since it uses as much as digits as its factorization.

1002544401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631772 (or 631749 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1002544401 is about 31662.9815557537. The cubic root of 1002544401 is about 1000.8474153510.

Adding to 1002544401 its reverse (1044452001), we get a palindrome (2046996402).

The spelling of 1002544401 in words is "one billion, two million, five hundred forty-four thousand, four hundred one".