2256556520 has 32 divisors (see below), whose sum is σ = 5102784000. Its totient is φ = 898083648.

The previous prime is 2256556513. The next prime is 2256556543. The reversal of 2256556520 is 256556522.

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 in 7 ways as a sum of consecutive naturals, for example, 133784 + ... + 149703.

It is an arithmetic number, because the mean of its divisors is an integer number (159462000).

Almost surely, 2^2256556520 is an apocalyptic number.

2256556520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2256556520 is an abundant number, since it is smaller than the sum of its proper divisors (2846227480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2256556520 is a wasteful number, since it uses less digits than its factorization.

2256556520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283697 (or 283693 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 38.

The square root of 2256556520 is about 47503.2264167393. The cubic root of 2256556520 is about 1311.6422733946.

The spelling of 2256556520 in words is "two billion, two hundred fifty-six million, five hundred fifty-six thousand, five hundred twenty".