2152581827 has 4 divisors (see below), whose sum is σ = 2348271096. Its totient is φ = 1956892560.

The previous prime is 2152581817. The next prime is 2152581833. The reversal of 2152581827 is 7281852512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2152581827 - 2¹⁰ = 2152580803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2152581817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97844618 + ... + 97844639.

It is an arithmetic number, because the mean of its divisors is an integer number (587067774).

Almost surely, 2^2152581827 is an apocalyptic number.

2152581827 is a deficient number, since it is larger than the sum of its proper divisors (195689269).

2152581827 is a wasteful number, since it uses less digits than its factorization.

2152581827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195689268.

The product of its digits is 89600, while the sum is 41.

The square root of 2152581827 is about 46395.9246809458. The cubic root of 2152581827 is about 1291.1793047533.

The spelling of 2152581827 in words is "two billion, one hundred fifty-two million, five hundred eighty-one thousand, eight hundred twenty-seven".