2140325521 has 4 divisors (see below), whose sum is σ = 2140751844. Its totient is φ = 2139899200.

The previous prime is 2140325507. The next prime is 2140325533. The reversal of 2140325521 is 1255230412.

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 943165521 + 1197160000 = 30711^2 + 34600^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140325521 - 2⁷ = 2140325393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2140325021) 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 in 3 ways as a sum of consecutive naturals, for example, 205540 + ... + 215701.

It is an arithmetic number, because the mean of its divisors is an integer number (535187961).

Almost surely, 2^2140325521 is an apocalyptic number.

It is an amenable number.

2140325521 is a deficient number, since it is larger than the sum of its proper divisors (426323).

2140325521 is an equidigital number, since it uses as much as digits as its factorization.

2140325521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426322.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2140325521 is about 46263.6522661149. The cubic root of 2140325521 is about 1288.7240796472.

Adding to 2140325521 its reverse (1255230412), we get a palindrome (3395555933).

The spelling of 2140325521 in words is "two billion, one hundred forty million, three hundred twenty-five thousand, five hundred twenty-one".