2554333561 has 4 divisors (see below), whose sum is σ = 2750820772. Its totient is φ = 2357846352.

The previous prime is 2554333519. The next prime is 2554333597. The reversal of 2554333561 is 1653334552.

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 178356025 + 2375977536 = 13355^2 + 48744^2 .

It is a cyclic number.

It is not a de Polignac number, because 2554333561 - 2¹³ = 2554325369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2554333561.

It is not an unprimeable number, because it can be changed into a prime (2554333511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98243586 + ... + 98243611.

It is an arithmetic number, because the mean of its divisors is an integer number (687705193).

Almost surely, 2^2554333561 is an apocalyptic number.

It is an amenable number.

2554333561 is a deficient number, since it is larger than the sum of its proper divisors (196487211).

2554333561 is a wasteful number, since it uses less digits than its factorization.

2554333561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196487210.

The product of its digits is 162000, while the sum is 37.

The square root of 2554333561 is about 50540.4151249275. The cubic root of 2554333561 is about 1366.9706914807.

Subtracting from 2554333561 its reverse (1653334552), we obtain a palindrome (900999009).

The spelling of 2554333561 in words is "two billion, five hundred fifty-four million, three hundred thirty-three thousand, five hundred sixty-one".