28571201 has 2 divisors, whose sum is σ = 28571202. Its totient is φ = 28571200.

The previous prime is 28571171. The next prime is 28571227. The reversal of 28571201 is 10217582.

It is an a-pointer prime, because the next prime (28571227) can be obtained adding 28571201 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25240576 + 3330625 = 5024^2 + 1825^2 .

It is a cyclic number.

It is not a de Polignac number, because 28571201 - 2¹⁴ = 28554817 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28571401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14285600 + 14285601.

It is an arithmetic number, because the mean of its divisors is an integer number (14285601).

Almost surely, 2^28571201 is an apocalyptic number.

It is an amenable number.

28571201 is a deficient number, since it is larger than the sum of its proper divisors (1).

28571201 is an equidigital number, since it uses as much as digits as its factorization.

28571201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 28571201 is about 5345.2035508482. The cubic root of 28571201 is about 305.7098970688.

Adding to 28571201 its reverse (10217582), we get a palindrome (38788783).

The spelling of 28571201 in words is "twenty-eight million, five hundred seventy-one thousand, two hundred one".