56551751266 has 8 divisors (see below), whose sum is σ = 84832327980. Its totient is φ = 28274308608.

The previous prime is 56551751257. The next prime is 56551751273. The reversal of 56551751266 is 66215715565.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 51019515625 + 5532235641 = 225875^2 + 74379^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 737871 + ... + 810898.

Almost surely, 2^56551751266 is an apocalyptic number.

56551751266 is a deficient number, since it is larger than the sum of its proper divisors (28280576714).

56551751266 is a wasteful number, since it uses less digits than its factorization.

56551751266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567028.

The product of its digits is 1890000, while the sum is 49.

The spelling of 56551751266 in words is "fifty-six billion, five hundred fifty-one million, seven hundred fifty-one thousand, two hundred sixty-six".