1641056 has 12 divisors (see below), whose sum is σ = 3230892. Its totient is φ = 820512.

The previous prime is 1641053. The next prime is 1641077. The reversal of 1641056 is 6501461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25610 + ... + 25673.

It is an arithmetic number, because the mean of its divisors is an integer number (269241).

2^1641056 is an apocalyptic number.

1641056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1641056 is a deficient number, since it is larger than the sum of its proper divisors (1589836).

1641056 is an equidigital number, since it uses as much as digits as its factorization.

1641056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51293 (or 51285 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1641056 is about 1281.0370798693. The cubic root of 1641056 is about 117.9526766093.

The spelling of 1641056 in words is "one million, six hundred forty-one thousand, fifty-six".