1556141 has 4 divisors (see below), whose sum is σ = 1577532. Its totient is φ = 1534752.

The previous prime is 1556117. The next prime is 1556147. The reversal of 1556141 is 1416551.

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 1357225 + 198916 = 1165^2 + 446^2 .

It is not a de Polignac number, because 1556141 - 2¹⁰ = 1555117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1556147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10586 + ... + 10731.

It is an arithmetic number, because the mean of its divisors is an integer number (394383).

It is the magic constant of a 146 × 146 magic square.

2^1556141 is an apocalyptic number.

It is an amenable number.

1556141 is a deficient number, since it is larger than the sum of its proper divisors (21391).

1556141 is an equidigital number, since it uses as much as digits as its factorization.

1556141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21390.

The product of its digits is 600, while the sum is 23.

The square root of 1556141 is about 1247.4538067600. The cubic root of 1556141 is about 115.8820888670.

The spelling of 1556141 in words is "one million, five hundred fifty-six thousand, one hundred forty-one".