2945203553 has 4 divisors (see below), whose sum is σ = 3017037828. Its totient is φ = 2873369280.

The previous prime is 2945203549. The next prime is 2945203559. The reversal of 2945203553 is 3553025492.

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 939238609 + 2005964944 = 30647^2 + 44788^2 .

It is a cyclic number.

It is not a de Polignac number, because 2945203553 - 2² = 2945203549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2945203559) 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, 35917076 + ... + 35917157.

It is an arithmetic number, because the mean of its divisors is an integer number (754259457).

Almost surely, 2^2945203553 is an apocalyptic number.

It is an amenable number.

2945203553 is a deficient number, since it is larger than the sum of its proper divisors (71834275).

2945203553 is an equidigital number, since it uses as much as digits as its factorization.

2945203553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71834274.

The product of its (nonzero) digits is 162000, while the sum is 38.

The square root of 2945203553 is about 54269.7296197429. The cubic root of 2945203553 is about 1433.4144292257.

The spelling of 2945203553 in words is "two billion, nine hundred forty-five million, two hundred three thousand, five hundred fifty-three".