2145571201 has 2 divisors, whose sum is σ = 2145571202. Its totient is φ = 2145571200.

The previous prime is 2145571171. The next prime is 2145571213. The reversal of 2145571201 is 1021755412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1825340176 + 320231025 = 42724^2 + 17895^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145571201 - 2⁷ = 2145571073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2145571201.

It is not a weakly prime, because it can be changed into another prime (2145571271) 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, 1072785600 + 1072785601.

It is an arithmetic number, because the mean of its divisors is an integer number (1072785601).

Almost surely, 2^2145571201 is an apocalyptic number.

It is an amenable number.

2145571201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145571201 is an equidigital number, since it uses as much as digits as its factorization.

2145571201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 2145571201 is about 46320.3108905802. The cubic root of 2145571201 is about 1289.7760565126.

The spelling of 2145571201 in words is "two billion, one hundred forty-five million, five hundred seventy-one thousand, two hundred one".