2152400641 has 4 divisors (see below), whose sum is σ = 2152941012. Its totient is φ = 2151860272.

The previous prime is 2152400633. The next prime is 2152400669. The reversal of 2152400641 is 1460042512.

It is a happy number.

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 790790641 + 1361610000 = 28121^2 + 36900^2 .

It is a cyclic number.

It is not a de Polignac number, because 2152400641 - 2³ = 2152400633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2152400671) 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, 264166 + ... + 272191.

It is an arithmetic number, because the mean of its divisors is an integer number (538235253).

Almost surely, 2^2152400641 is an apocalyptic number.

It is an amenable number.

2152400641 is a deficient number, since it is larger than the sum of its proper divisors (540371).

2152400641 is an equidigital number, since it uses as much as digits as its factorization.

2152400641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540370.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 2152400641 is about 46393.9720330131. The cubic root of 2152400641 is about 1291.1430769121.

The spelling of 2152400641 in words is "two billion, one hundred fifty-two million, four hundred thousand, six hundred forty-one".