971563001 has 2 divisors, whose sum is σ = 971563002. Its totient is φ = 971563000.

The previous prime is 971562989. The next prime is 971563007. The reversal of 971563001 is 100365179.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 964164601 + 7398400 = 31051^2 + 2720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-971563001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (971563007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485781500 + 485781501.

It is an arithmetic number, because the mean of its divisors is an integer number (485781501).

Almost surely, 2^971563001 is an apocalyptic number.

It is an amenable number.

971563001 is a deficient number, since it is larger than the sum of its proper divisors (1).

971563001 is an equidigital number, since it uses as much as digits as its factorization.

971563001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 971563001 is about 31169.9053736132. The cubic root of 971563001 is about 990.4297019110.

The spelling of 971563001 in words is "nine hundred seventy-one million, five hundred sixty-three thousand, one".