2445021001 has 4 divisors (see below), whose sum is σ = 2529332100. Its totient is φ = 2360709904.

The previous prime is 2445020993. The next prime is 2445021011. The reversal of 2445021001 is 1001205442.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1497612601 + 947408400 = 38699^2 + 30780^2 .

It is a cyclic number.

It is not a de Polignac number, because 2445021001 - 2³ = 2445020993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2445021001.

It is not an unprimeable number, because it can be changed into a prime (2445021011) 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, 42155506 + ... + 42155563.

It is an arithmetic number, because the mean of its divisors is an integer number (632333025).

Almost surely, 2^2445021001 is an apocalyptic number.

It is an amenable number.

2445021001 is a deficient number, since it is larger than the sum of its proper divisors (84311099).

2445021001 is an equidigital number, since it uses as much as digits as its factorization.

2445021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84311098.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 2445021001 is about 49447.1536187878. The cubic root of 2445021001 is about 1347.1859077951.

Adding to 2445021001 its reverse (1001205442), we get a palindrome (3446226443).

It can be divided in two parts, 24450 and 21001, that added together give a triangular number (45451 = T₃₀₁).

The spelling of 2445021001 in words is "two billion, four hundred forty-five million, twenty-one thousand, one".