978571201 has 2 divisors, whose sum is σ = 978571202. Its totient is φ = 978571200.

The previous prime is 978571199. The next prime is 978571207. The reversal of 978571201 is 102175879.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 687698176 + 290873025 = 26224^2 + 17055^2 .

It is a cyclic number.

It is not a de Polignac number, because 978571201 - 2¹ = 978571199 is a prime.

Together with 978571199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (978571207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489285600 + 489285601.

It is an arithmetic number, because the mean of its divisors is an integer number (489285601).

Almost surely, 2^978571201 is an apocalyptic number.

It is an amenable number.

978571201 is a deficient number, since it is larger than the sum of its proper divisors (1).

978571201 is an equidigital number, since it uses as much as digits as its factorization.

978571201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 40.

The square root of 978571201 is about 31282.1227061080. The cubic root of 978571201 is about 992.8054292870.

The spelling of 978571201 in words is "nine hundred seventy-eight million, five hundred seventy-one thousand, two hundred one".