1556056356 has 12 divisors (see below), whose sum is σ = 3630798192. Its totient is φ = 518685448.

The previous prime is 1556056303. The next prime is 1556056367. The reversal of 1556056356 is 6536506551.

1556056356 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1556056356² = 4842622766095997472, which contains 22 as substring.

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, 64835670 + ... + 64835693.

It is an arithmetic number, because the mean of its divisors is an integer number (302566516).

Almost surely, 2^1556056356 is an apocalyptic number.

It is an amenable number.

1556056356 is an abundant number, since it is smaller than the sum of its proper divisors (2074741836).

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

1556056356 is a wasteful number, since it uses less digits than its factorization.

1556056356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129671370 (or 129671368 counting only the distinct ones).

The product of its (nonzero) digits is 405000, while the sum is 42.

The square root of 1556056356 is about 39446.8801808204. The cubic root of 1556056356 is about 1158.7998775033.

The spelling of 1556056356 in words is "one billion, five hundred fifty-six million, fifty-six thousand, three hundred fifty-six".