1556061 has 16 divisors (see below), whose sum is σ = 2366784. Its totient is φ = 900864.

The previous prime is 1556059. The next prime is 1556069. The reversal of 1556061 is 1606551.

It is not a de Polignac number, because 1556061 - 2¹ = 1556059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1556069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 511 + ... + 1836.

It is an arithmetic number, because the mean of its divisors is an integer number (147924).

2^1556061 is an apocalyptic number.

It is an amenable number.

1556061 is a deficient number, since it is larger than the sum of its proper divisors (810723).

1556061 is a wasteful number, since it uses less digits than its factorization.

1556061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1556061 is about 1247.4217410323. The cubic root of 1556061 is about 115.8801030302.

It can be divided in two parts, 155 and 6061, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 1556061 in words is "one million, five hundred fifty-six thousand, sixty-one".