201570971 has 16 divisors (see below), whose sum is σ = 237625344. Its totient is φ = 167396544.

The previous prime is 201570923. The next prime is 201570973. The reversal of 201570971 is 179075102.

201570971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201570971 - 2¹⁰ = 201569947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201570973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35591 + ... + 40863.

It is an arithmetic number, because the mean of its divisors is an integer number (14851584).

Almost surely, 2^201570971 is an apocalyptic number.

201570971 is a deficient number, since it is larger than the sum of its proper divisors (36054373).

201570971 is a wasteful number, since it uses less digits than its factorization.

201570971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5450.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 201570971 is about 14197.5691933514. The cubic root of 201570971 is about 586.3307383312.

The spelling of 201570971 in words is "two hundred one million, five hundred seventy thousand, nine hundred seventy-one".