2550666917 has 8 divisors (see below), whose sum is σ = 2584871040. Its totient is φ = 2516510880.

The previous prime is 2550666863. The next prime is 2550666919. The reversal of 2550666917 is 7196660552.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2550666917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2550666919) 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 7 ways as a sum of consecutive naturals, for example, 101942 + ... + 124472.

It is an arithmetic number, because the mean of its divisors is an integer number (323108880).

Almost surely, 2^2550666917 is an apocalyptic number.

It is an amenable number.

2550666917 is a deficient number, since it is larger than the sum of its proper divisors (34204123).

2550666917 is a wasteful number, since it uses less digits than its factorization.

2550666917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24043.

The product of its (nonzero) digits is 680400, while the sum is 47.

The square root of 2550666917 is about 50504.1277223951. The cubic root of 2550666917 is about 1366.3163009522.

The spelling of 2550666917 in words is "two billion, five hundred fifty million, six hundred sixty-six thousand, nine hundred seventeen".