2141001565 has 8 divisors (see below), whose sum is σ = 2569590360. Its totient is φ = 1712542272.

The previous prime is 2141001563. The next prime is 2141001581. The reversal of 2141001565 is 5651001412.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1310005636 + 830995929 = 36194^2 + 28827^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2141001565 - 2¹ = 2141001563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2141001563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8751 + ... + 66019.

It is an arithmetic number, because the mean of its divisors is an integer number (321198795).

Almost surely, 2^2141001565 is an apocalyptic number.

It is an amenable number.

2141001565 is a deficient number, since it is larger than the sum of its proper divisors (428588795).

2141001565 is an equidigital number, since it uses as much as digits as its factorization.

2141001565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64751.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 2141001565 is about 46270.9581162958. The cubic root of 2141001565 is about 1288.8597509831.

Adding to 2141001565 its reverse (5651001412), we get a palindrome (7792002977).

The spelling of 2141001565 in words is "two billion, one hundred forty-one million, one thousand, five hundred sixty-five".