2550550553 has 4 divisors (see below), whose sum is σ = 2550930228. Its totient is φ = 2550170880.

The previous prime is 2550550549. The next prime is 2550550559. The reversal of 2550550553 is 3550550552.

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 981756889 + 1568793664 = 31333^2 + 39608^2 .

It is a cyclic number.

It is not a de Polignac number, because 2550550553 - 2² = 2550550549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2550550559) 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, 179576 + ... + 193257.

It is an arithmetic number, because the mean of its divisors is an integer number (637732557).

Almost surely, 2^2550550553 is an apocalyptic number.

It is an amenable number.

2550550553 is a deficient number, since it is larger than the sum of its proper divisors (379675).

2550550553 is an equidigital number, since it uses as much as digits as its factorization.

2550550553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379674.

The product of its (nonzero) digits is 93750, while the sum is 35.

The square root of 2550550553 is about 50502.9756846069. The cubic root of 2550550553 is about 1366.2955230598.

Subtracting 2550550553 from its reverse (3550550552), we obtain a palindrome (999999999).

The spelling of 2550550553 in words is "two billion, five hundred fifty million, five hundred fifty thousand, five hundred fifty-three".