245143001 has 2 divisors, whose sum is σ = 245143002. Its totient is φ = 245143000.

The previous prime is 245142983. The next prime is 245143013. The reversal of 245143001 is 100341542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 234120601 + 11022400 = 15301^2 + 3320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245143001 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (245143021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122571500 + 122571501.

It is an arithmetic number, because the mean of its divisors is an integer number (122571501).

Almost surely, 2^245143001 is an apocalyptic number.

It is an amenable number.

245143001 is a deficient number, since it is larger than the sum of its proper divisors (1).

245143001 is an equidigital number, since it uses as much as digits as its factorization.

245143001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 245143001 is about 15657.0431755169. The cubic root of 245143001 is about 625.8541928887.

Adding to 245143001 its reverse (100341542), we get a palindrome (345484543).

The spelling of 245143001 in words is "two hundred forty-five million, one hundred forty-three thousand, one".