1556113 has 4 divisors (see below), whose sum is σ = 1675828. Its totient is φ = 1436400.

The previous prime is 1556083. The next prime is 1556117. The reversal of 1556113 is 3116551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 966289 + 589824 = 983^2 + 768^2 .

It is a cyclic number.

It is not a de Polignac number, because 1556113 - 2¹³ = 1547921 is a prime.

It is an Ulam number.

It is a Duffinian 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 in 3 ways as a sum of consecutive naturals, for example, 59838 + ... + 59863.

It is an arithmetic number, because the mean of its divisors is an integer number (418957).

2^1556113 is an apocalyptic number.

1556113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1556113 is a deficient number, since it is larger than the sum of its proper divisors (119715).

1556113 is a wasteful number, since it uses less digits than its factorization.

1556113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119714.

The product of its digits is 450, while the sum is 22.

The square root of 1556113 is about 1247.4425838491. The cubic root of 1556113 is about 115.8813938319.

The spelling of 1556113 in words is "one million, five hundred fifty-six thousand, one hundred thirteen".