44445001 has 2 divisors, whose sum is σ = 44445002. Its totient is φ = 44445000.

The previous prime is 44444999. The next prime is 44445031. The reversal of 44445001 is 10054444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44355600 + 89401 = 6660^2 + 299^2 .

It is a cyclic number.

It is not a de Polignac number, because 44445001 - 2¹ = 44444999 is a prime.

It is a super-2 number, since 2×44445001² = 3950716227780002, which contains 22 as substring.

Together with 44444999, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (44445031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22222500 + 22222501.

It is an arithmetic number, because the mean of its divisors is an integer number (22222501).

Almost surely, 2^44445001 is an apocalyptic number.

It is an amenable number.

44445001 is a deficient number, since it is larger than the sum of its proper divisors (1).

44445001 is an equidigital number, since it uses as much as digits as its factorization.

44445001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 44445001 is about 6666.7084082027. The cubic root of 44445001 is about 354.2210016260.

Adding to 44445001 its reverse (10054444), we get a palindrome (54499445).

The spelling of 44445001 in words is "forty-four million, four hundred forty-five thousand, one".