2045545441 has 4 divisors (see below), whose sum is σ = 2084140692. Its totient is φ = 2006950192.

The previous prime is 2045545427. The next prime is 2045545471. The reversal of 2045545441 is 1445455402.

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 1703295441 + 342250000 = 41271^2 + 18500^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045545441 - 2²¹ = 2043448289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2045545397 and 2045545406.

It is not an unprimeable number, because it can be changed into a prime (2045545471) 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, 19297546 + ... + 19297651.

It is an arithmetic number, because the mean of its divisors is an integer number (521035173).

Almost surely, 2^2045545441 is an apocalyptic number.

It is an amenable number.

2045545441 is a deficient number, since it is larger than the sum of its proper divisors (38595251).

2045545441 is an equidigital number, since it uses as much as digits as its factorization.

2045545441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38595250.

The product of its (nonzero) digits is 64000, while the sum is 34.

The square root of 2045545441 is about 45227.7065635657. The cubic root of 2045545441 is about 1269.4132989710.

The spelling of 2045545441 in words is "two billion, forty-five million, five hundred forty-five thousand, four hundred forty-one".