2040552521 has 12 divisors (see below), whose sum is σ = 2376984132. Its totient is φ = 1746628128.

The previous prime is 2040552439. The next prime is 2040552529. The reversal of 2040552521 is 1252550402.

It can be written as a sum of positive squares in 2 ways, for example, as 2007040000 + 33512521 = 44800^2 + 5789^2 .

It is not a de Polignac number, because 2040552521 - 2²² = 2036358217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2040552529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7511 + ... + 64323.

It is an arithmetic number, because the mean of its divisors is an integer number (198082011).

Almost surely, 2^2040552521 is an apocalyptic number.

It is an amenable number.

2040552521 is a deficient number, since it is larger than the sum of its proper divisors (336431611).

2040552521 is an equidigital number, since it uses as much as digits as its factorization.

2040552521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57560 (or 57553 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 2040552521 is about 45172.4752587236. The cubic root of 2040552521 is about 1268.3796312518.

The spelling of 2040552521 in words is "two billion, forty million, five hundred fifty-two thousand, five hundred twenty-one".