1556116 has 6 divisors (see below), whose sum is σ = 2723210. Its totient is φ = 778056.

The previous prime is 1556083. The next prime is 1556117. The reversal of 1556116 is 6116551.

It can be written as a sum of positive squares in only one way, i.e., 1552516 + 3600 = 1246^2 + 60^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1556117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194511 + ... + 194518.

2^1556116 is an apocalyptic number.

It is an amenable number.

1556116 is a deficient number, since it is larger than the sum of its proper divisors (1167094).

1556116 is a wasteful number, since it uses less digits than its factorization.

1556116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389033 (or 389031 counting only the distinct ones).

The product of its digits is 900, while the sum is 25.

The square root of 1556116 is about 1247.4437863086. The cubic root of 1556116 is about 115.8814683003.

The spelling of 1556116 in words is "one million, five hundred fifty-six thousand, one hundred sixteen".