2152141081 has 4 divisors (see below), whose sum is σ = 2161377972. Its totient is φ = 2142904192.

The previous prime is 2152141067. The next prime is 2152141091. The reversal of 2152141081 is 1801412512.

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

It can be written as a sum of positive squares in 2 ways, for example, as 338744025 + 1813397056 = 18405^2 + 42584^2 .

It is a cyclic number.

It is not a de Polignac number, because 2152141081 - 2⁵ = 2152141049 is a prime.

It is a super-2 number, since 2×2152141081² = 9263422465055697122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2152141051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4618096 + ... + 4618561.

It is an arithmetic number, because the mean of its divisors is an integer number (540344493).

Almost surely, 2^2152141081 is an apocalyptic number.

It is an amenable number.

2152141081 is a deficient number, since it is larger than the sum of its proper divisors (9236891).

2152141081 is an equidigital number, since it uses as much as digits as its factorization.

2152141081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9236890.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 2152141081 is about 46391.1746025039. The cubic root of 2152141081 is about 1291.0911747766.

Adding to 2152141081 its reverse (1801412512), we get a palindrome (3953553593).

The spelling of 2152141081 in words is "two billion, one hundred fifty-two million, one hundred forty-one thousand, eighty-one".