2256521366 has 8 divisors (see below), whose sum is σ = 3692489544. Its totient is φ = 1025691520.

The previous prime is 2256521359. The next prime is 2256521417. The reversal of 2256521366 is 6631256522.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51284555 + ... + 51284598.

It is an arithmetic number, because the mean of its divisors is an integer number (461561193).

Almost surely, 2^2256521366 is an apocalyptic number.

2256521366 is a deficient number, since it is larger than the sum of its proper divisors (1435968178).

2256521366 is a wasteful number, since it uses less digits than its factorization.

2256521366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102569166.

The product of its digits is 129600, while the sum is 38.

The square root of 2256521366 is about 47502.8563983262. The cubic root of 2256521366 is about 1311.6354621741.

Adding to 2256521366 its reverse (6631256522), we get a palindrome (8887777888).

The spelling of 2256521366 in words is "two billion, two hundred fifty-six million, five hundred twenty-one thousand, three hundred sixty-six".