1556163 has 24 divisors (see below), whose sum is σ = 2721888. Its totient is φ = 836352.

The previous prime is 1556147. The next prime is 1556173. The reversal of 1556163 is 3616551.

It is a happy number.

It is not a de Polignac number, because 1556163 - 2⁴ = 1556147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1556173) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 345 + ... + 1797.

It is an arithmetic number, because the mean of its divisors is an integer number (113412).

2^1556163 is an apocalyptic number.

1556163 is a deficient number, since it is larger than the sum of its proper divisors (1165725).

1556163 is a wasteful number, since it uses less digits than its factorization.

1556163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483 (or 1480 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 1556163 is about 1247.4626246906. The cubic root of 1556163 is about 115.8826349602.

The spelling of 1556163 in words is "one million, five hundred fifty-six thousand, one hundred sixty-three".