2550755381 has 4 divisors (see below), whose sum is σ = 2552968812. Its totient is φ = 2548541952.

The previous prime is 2550755371. The next prime is 2550755477. The reversal of 2550755381 is 1835570552.

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 2213702500 + 337052881 = 47050^2 + 18359^2 .

It is a cyclic number.

It is not a de Polignac number, because 2550755381 - 2¹⁴ = 2550738997 is a prime.

It is a super-2 number, since 2×2550755381² = 13012706027400910322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2550755371) 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, 1104986 + ... + 1107291.

It is an arithmetic number, because the mean of its divisors is an integer number (638242203).

Almost surely, 2^2550755381 is an apocalyptic number.

It is an amenable number.

2550755381 is a deficient number, since it is larger than the sum of its proper divisors (2213431).

2550755381 is a wasteful number, since it uses less digits than its factorization.

2550755381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213430.

The product of its (nonzero) digits is 210000, while the sum is 41.

The square root of 2550755381 is about 50505.0035244034. The cubic root of 2550755381 is about 1366.3320966129.

The spelling of 2550755381 in words is "two billion, five hundred fifty million, seven hundred fifty-five thousand, three hundred eighty-one".