2550181538 has 4 divisors (see below), whose sum is σ = 3825272310. Its totient is φ = 1275090768.

The previous prime is 2550181519. The next prime is 2550181553. The reversal of 2550181538 is 8351810552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2406589249 + 143592289 = 49057^2 + 11983^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 637545383 + ... + 637545386.

Almost surely, 2^2550181538 is an apocalyptic number.

2550181538 is a deficient number, since it is larger than the sum of its proper divisors (1275090772).

2550181538 is a wasteful number, since it uses less digits than its factorization.

2550181538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275090771.

The product of its (nonzero) digits is 48000, while the sum is 38.

The square root of 2550181538 is about 50499.3221538666. The cubic root of 2550181538 is about 1366.2296277627.

The spelling of 2550181538 in words is "two billion, five hundred fifty million, one hundred eighty-one thousand, five hundred thirty-eight".