2551832806 has 4 divisors (see below), whose sum is σ = 3827749212. Its totient is φ = 1275916402.

The previous prime is 2551832713. The next prime is 2551832837. The reversal of 2551832806 is 6082381552.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637958200 + ... + 637958203.

It is an arithmetic number, because the mean of its divisors is an integer number (956937303).

Almost surely, 2^2551832806 is an apocalyptic number.

2551832806 is a deficient number, since it is larger than the sum of its proper divisors (1275916406).

2551832806 is a wasteful number, since it uses less digits than its factorization.

2551832806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275916405.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 2551832806 is about 50515.6689156939. The cubic root of 2551832806 is about 1366.5244465794.

The spelling of 2551832806 in words is "two billion, five hundred fifty-one million, eight hundred thirty-two thousand, eight hundred six".