2550347881 has 4 divisors (see below), whose sum is σ = 2554508932. Its totient is φ = 2546186832.

The previous prime is 2550347879. The next prime is 2550347909. The reversal of 2550347881 is 1887430552.

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 1280494656 + 1269853225 = 35784^2 + 35635^2 .

It is a cyclic number.

It is not a de Polignac number, because 2550347881 - 2¹ = 2550347879 is a prime.

It is a super-2 number, since 2×2550347881² = 13008548628242380322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2550341881) 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, 2079606 + ... + 2080831.

It is an arithmetic number, because the mean of its divisors is an integer number (638627233).

Almost surely, 2^2550347881 is an apocalyptic number.

It is an amenable number.

2550347881 is a deficient number, since it is larger than the sum of its proper divisors (4161051).

2550347881 is an equidigital number, since it uses as much as digits as its factorization.

2550347881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4161050.

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 2550347881 is about 50500.9691095131. The cubic root of 2550347881 is about 1366.2593325491.

The spelling of 2550347881 in words is "two billion, five hundred fifty million, three hundred forty-seven thousand, eight hundred eighty-one".